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General Category => Amstrad CPC hardware => Topic started by: gerald on 23:04, 16 May 15

Title: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 23:04, 16 May 15
I've just serviced a GX4000 that failed after using a C4CPC.
To make it short, the original power supply likely failed, ultimately frying the RAM.

The C4CPC consume up to 80mA more than a regular cartridge, a GX4000 is consuming about 400mA + 50mA if it has an RF modulator. This slightly exceed the rated current supply of the Amstrad provided power brick.

Therefore I urge you to stop using your Amstrad power supply with the C4CPC.

Instead :
  - use any regulated DC 9V to 12V 750mA (positive on center pin, GND on outer pin), powering the 11V entry. The 11V is used to power the 5V regulator and to drive the scart switching pin.

  - use the 5V supply input and the DIN rgb output (as if connected to a plus monitor). 5V supply may not work well with GX4000 having a RF modulator when using the SCART plug.

As a general rule, when using the 11V input, using a power supply with a voltage as low a 7.5V will work with the possible exception of the scart switching signal. Using it at lower voltage will minimise the 5V regulator(s) heating.

Failure details :
To fix it, I first replaced the main voltage regulator as it was issuing 7.5V instead of 5V. However, this happened also with the new one.
I then found that the 7805 bypass diode (to protect it when powered from a 5V supply, see attached schematics) failed in a way that feed the 11V on the 5V. So I removed that diode to discover that the RAM chip failed as well.
Once the RAM have been changed, everything worked fine. I've also replaced the diode with a new one.

Now, what happened ?
I suspect the power brick to have failed, or at least had a transient that made the diode fail, which in turn fried the RAM, which roughly protected the remaining part of the GX4000. The GX4000 jumped to 1A with the dead RAM.

Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 23:15, 16 May 15
The original Amstrad power supply is a 11V 500mA stabilised power supply, using a 220V AC input.
From oscilloscope trace under load, it seems to use a full diode bridge and a 3300µF filtering cap.

Powered with a 230V main, the output voltage is :
With a 240V main, DC voltage would go at 12.6V, which mean about 3.8W to dissipate for the 5V internal regulator instead of 3W at specified 11V

With a 9V DC regulated power supply, the dissipated power will be reduced to 2W.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: dxs on 00:23, 17 May 15
Hi, So does that mean that if we have a GX4000 without the RF output we can continue to use the original Amstrad PSU?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: CraigsBar on 01:29, 17 May 15
The original Amstrad power supply is a 11V 500mA stabilised power supply, using a 220V AC input.
From oscilloscope trace under load, it seems to use a full diode bridge and a 3300µF filtering cap.

Powered with a 230V main, the output voltage is :
  • unloaded : 15.4V DC
  • under load (415mA) : 12.1V DC + 1V AC ripple.
With a 240V main, DC voltage would go at 12.6V, which mean about 3.8W to dissipate for the 5V internal regulator instead of 3W at specified 11V

With a 9V DC regulated power supply, the dissipated power will be reduced to 2W.
Mine is now safely on a 9v 1A supply and the original one is packed up back in the box.


Seems to be fine with 9v not 11, my 6v supply does not power it (well the LEDS on the C4CPC and console light, but nothing else) and I don't have a 7v supply.


Craig

Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Ast on 11:04, 17 May 15
Hi, So does that mean that if we have a GX4000 without the RF output we can continue to use the original Amstrad PSU?
I've asked the same question to Gerald a few days ago. His answer was it'll be better to change the power supply to not have any problems with the old one.
After that, do what you have to do!
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 12:05, 17 May 15
Hi, So does that mean that if we have a GX4000 without the RF output we can continue to use the original Amstrad PSU?
I would not recommend this, you only get a 50mA margin.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 12:09, 17 May 15
my 6v supply does not power it (well the LEDS on the C4CPC and console light, but nothing else) and I don't have a 7v supply.
6V is too low for the 5V regulator to work as it need 2V margin.
And while the GX4000 may not work at 4V, the C4CPC will : it's a 3.3V device and it regulator only need less than .5V margin to work.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Crazy_Borg on 17:30, 17 May 15
Sadly, we lost a large part of the discussion here because of the database crash.

All of my GX4000 need at least 9V at the 11V input, 7,5V is too low and results in visual corruption / game freezes.

It is possible to power the GX4000 through the 5V Monitor input if you only have a 5V power supply.
To power the RGB chip CXA1145 for the SCART output to work you have to remove the UPC78L05 (IC17) and bridge point LK7 on the pcb, which  it is marked on the pcb near the IC17.
That way you will turn your GX4000 into a french model.
I already modded a regular GX4000 this way some time ago and it worked fine, though I only testet the SCART output.

Gerald noted that the RF modulator may not work because of noise after the above described conversion, but who is using it anyway?
Where you worried just about image stability or about a complete failure of the RF modulator because of it?


Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 17:36, 17 May 15
Gerald noted that the RF modulator may not work because of noise after the above described conversion, but who is using it anyway?
Where you worried just about image stability or about a complete failure of the RF modulator because of it?
Mostly noise. But as you said, who is still using it nowadays ?
Yes, 7V is the low limit. I think the sweet spot is 9V.
Also, the original 11V power supply will run at higher voltage with current 230/240V instead of the old good 220V.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: dthrone on 12:23, 18 May 15
Is it possible to recommend a suitable replacement brick, maybe with an Amazon (or equivalent) link or something?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 13:09, 18 May 15
Is it possible to recommend a suitable replacement brick, maybe with an Amazon (or equivalent) link or something?
You should look for something like this :
9V 1.5A : High Capacity 9V Power Supply Adapter for Arduino: Amazon.co.uk: Electronics (http://www.amazon.co.uk/Capacity-Power-Supply-Adapter-Arduino/dp/B00REP8EY8/)
9V 1 A : GRV 9V DC 1A switching power adaptor 2.1x5.5mm Supply UK plug: Amazon.co.uk: (http://www.amazon.co.uk/GRV-switching-adaptor-2-1x5-5mm-Supply/dp/B00DJ4SXYO/)

Both of these have a 2.1mm centre pole that should prevent pluging them on the 5V input.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 13:49, 18 May 15
You should look for something like this :
9V 1.5A : High Capacity 9V Power Supply Adapter for Arduino: Amazon.co.uk: Electronics (http://www.amazon.co.uk/Capacity-Power-Supply-Adapter-Arduino/dp/B00REP8EY8/)
9V 1 A : GRV 9V DC 1A switching power adaptor 2.1x5.5mm Supply UK plug: Amazon.co.uk: (http://www.amazon.co.uk/GRV-switching-adaptor-2-1x5-5mm-Supply/dp/B00DJ4SXYO/)

Both of these have a 2.1mm centre pole that should prevent pluging them on the 5V input.


Don't much like the look of either of those. One of them came apart when the user got it, a reviewer on the other measured the output and found it to be unstable. Fact is most of the generic PSU's on Ebay and Amazon are dangerous poorly made tat.


The only place I can recommend for PSU's are RS. Yes they are expensive but their PSU's are both stable and unlikely to kill you or your equipment.


Plug In Power Supply | RS Components (http://uk.rs-online.com/web/c/power-supplies-transformers/power-supplies-psus/plug-in-power-supply/)


Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Phantomz on 14:04, 18 May 15

Don't much like the look of either of those. One of them came apart when the user got it, a reviewer on the other measured the output and found it to be unstable. Fact is most of the generic PSU's on Ebay and Amazon are dangerous poorly made tat.


The only place I can recommend for PSU's are RS. Yes they are expensive but their PSU's are both stable and unlikely to kill you or your equipment.


Plug In Power Supply | RS Components (http://uk.rs-online.com/web/c/power-supplies-transformers/power-supplies-psus/plug-in-power-supply/)

Have you got a link for the best one to get from there for the Gx4000?  :)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 14:23, 18 May 15
Have you got a link for the best one to get from there for the Gx4000?  :)


Just select what you require on the left hand side, hit update and it will give you the suggestions. Double check the specs of what you are buying as they have so many PSU's in stock you need to be ware that you need a switched mode PSU with the correct input voltage and a UK plug.


You could go for a 5v adaptor if you wish which could then double up for use with a standard CPC if you have one or plan to get one.


I can't access the search thing at the moment but can try later. I can also post the RS part number of the PSU I use for my 6128 tonight.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 15:37, 18 May 15
Suitable 9V 1A from RS :
5.5 x 2.1 with positive on centre pole

Euro plug :  ECP-11-9E | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262775/)
UK plug : http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/ (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/)
Selectable Plug : http://uk.rs-online.com/web/p/plug-in-power-supply/7068094/ (http://uk.rs-online.com/web/p/plug-in-power-supply/7068094/)



Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Phantomz on 20:55, 18 May 15
Suitable 9V 1A from RS :
5.5 x 2.1 with positive on centre pole

Euro plug :  ECP-11-9E | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262775/)
UK plug : ECP-11-9U | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/)
Selectable Plug : PSC12R-090 | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7068094/)

Thank you for that.  :)

I'll get one of those for my GX4000, I've also got a 6128 Plus with a Monitor, I know you said the Monitor Power supply is ok to use with the C4CPC, but I'm not using it at the moment.
The monitor is stored away as I haven't got the space really so I'm using one of those power and scart kits that you get from ebay.

A photo of the power supply I'm using is below:

6128 Power Supply_zpszw8mmyw4.jpg Photo by Phantomz | Photobucket (http://s1303.photobucket.com/user/Phantomz/media/6128%20Power%20Supply_zpszw8mmyw4.jpg.html)

Is this ok with the C4CPC in my 6128 Plus or do I need a different one?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 21:35, 18 May 15
6128 Power Supply_zpszw8mmyw4.jpg Photo by Phantomz | Photobucket (http://s1303.photobucket.com/user/Phantomz/media/6128%20Power%20Supply_zpszw8mmyw4.jpg.html)

Is this ok with the C4CPC in my 6128 Plus or do I need a different one?
2.5 Amp more than enough for a 6128
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Phantomz on 21:40, 18 May 15
2.5 Amp more than enough for a 6128

That's good then, only need one for the GX4000.

Thanks  :D
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: EgoTrip on 21:55, 18 May 15
You don't need more than one CPC. You should give me one.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: dragon on 22:25, 18 May 15
I have the nimo alm 072 multi output, and i very  happy with it.

If you compare the nimo, with a normal chinese adapter or similiar low price , the adapter always is very hot. The nimo is cold.

But it not cost 10e, it cost me around 30e,And I no longer worry about amps. He deliver 5A in all outputs. (But they have other model with minus amperes).
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Phantomz on 22:34, 18 May 15
You don't need more than one CPC. You should give me one.

Yea you do  :P
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: CraigsBar on 23:17, 18 May 15
You don't need more than one CPC. You should give me one.
Is that where I am going wrong... Damn, I got 2 CPC's, 3 plusses and GX4000. Not giving any away tho! I dod offer to give away a JXD S7800b but no one seemed too interested. Oh well.


Craig
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: EgoTrip on 23:28, 18 May 15
Is that where I am going wrong... Damn, I got 2 CPC's, 3 plusses and GX4000. Not giving any away tho! I dod offer to give away a JXD S7800b but no one seemed too interested. Oh well.


Craig

Greedy 1%er >:( ;)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Phantomz on 17:14, 20 May 15
Suitable 9V 1A from RS :
5.5 x 2.1 with positive on centre pole

Euro plug :  ECP-11-9E | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262775/)
UK plug : ECP-11-9U | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/)
Selectable Plug : PSC12R-090 | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7068094/)

I decided to get one of these UK plug : ECP-11-9U | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/) ordered it yesterday in the afternoon around 14:30 and it turned up this morning just after 08:00 , so they are fast.  :)

I've tested it quick and it works fine, I don't know if it stays cool as haven't had time to play with it yet.  :-\

Happy with the service though.  :D
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Dr Tiger Ninestein on 12:03, 22 May 15
I decided to get one of these UK plug : ECP-11-9U | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/) ordered it yesterday in the afternoon around 14:30 and it turned up this morning just after 08:00 , so they are fast.  :)

I've tested it quick and it works fine, I don't know if it stays cool as haven't had time to play with it yet.  :-\

Happy with the service though.  :D


I'm about to order one of these. Am I right in thinking that I can use this to power my gx4000 with or without the c4cpc?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 12:13, 22 May 15
Am I right in thinking that I can use this to power my gx4000 with or without the c4cpc?
Yes !
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 16:01, 22 May 15
I decided to get one of these UK plug : ECP-11-9U | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/) ordered it yesterday in the afternoon around 14:30 and it turned up this morning just after 08:00 , so they are fast.  :)

I've tested it quick and it works fine, I don't know if it stays cool as haven't had time to play with it yet.  :-\

Happy with the service though.  :D


RS are very good. They've only just dropped their £40 minimum order requirement in fact as they generally sell to professionals and serious hobbyists. Next day is pretty standard for them.


Wouldn't expect the PSU to get hot. In fact if the GX tries to use more than the PSU's specified current draw the PSU should just cut out. The RS supplies are generally very good.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Dinorast on 13:02, 23 May 15
Many thanks again to Gerald, excellent work - now my gx4000 works flawless again with the new 9v power supply
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Neil79 on 03:21, 10 June 15
UK plug : ECP-11-9U | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/)


Am I correct in reading you only need this for a GX4000 with or without a C4CPC?


If this has been answered I'm sorry, it's 1.30am and I should be going to bed  :laugh:
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: seanb on 13:09, 10 June 15
This is for with a c4cpc but concensus in here is to ditch the official amstrad power adapter anyway as they are prone to failure and can take your gx4000 with them.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Beaps on 13:50, 10 June 15
Shoot I think I already fried my GX4000  :(


Any ideas where I can get the parts hightlighted in the first post to replace my knackered bits




Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 14:03, 10 June 15
How did you manage that?

All parts except for the RAM are standard, still available parts and can be bought from any electronics supplier. The RAM should be available on ebay.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Neil79 on 14:35, 10 June 15
Shoot I think I already fried my GX4000  :(


 :o  How?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 23:17, 10 June 15
All parts except for the RAM ASIC are standard, still available parts and can be bought from any electronics supplier. The RAM should be available on ebay.
;)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 23:37, 10 June 15
?? The ASIC isn't highlighted. He asked "Any ideas where I can get the parts hightlighted in the first post" :)

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 23:41, 10 June 15
?? The ASIC isn't highlighted. He asked "Any ideas where I can get the parts hightlighted in the first post" :)
I think you'r right  ;D , read it too fast  ???
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Beaps on 21:27, 11 June 15
I made may own multicart using the one eprom and switching it out. When I connected up the original Amstrad power supply it blow it. I thought it was the power supply so I bought another and it killed that also.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 10:38, 12 June 15
Obviously you've shorted something on your multicart (assuming the GX still works with original carts).

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Beaps on 14:19, 12 June 15
I aint got a power supply to test, scared tho if I do I will kill that one also, it will be 3 dead power supply's then
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 14:40, 12 June 15
Do you have a multimeter to check the GX and cartridge first?

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: manic23 on 15:14, 23 June 15
Thanks for the info guys, I have just ordered the suggested RS power supply for my GX4000 and the C4CPC! Can't wait to get playing.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ImpaledGryphon on 21:48, 21 July 15
ok guys, this is going to sound like a really dumb question, probably because it is ;)


if i buy one of these rs components psu's for my gx4000 +c4cpc will i be able to use it to power my newly purchased cpc 464 with scart lead or are the voltages / pins totally different?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 22:22, 21 July 15
if i buy one of these rs components psu's for my gx4000 +c4cpc will i be able to use it to power my newly purchased cpc 464 with scart lead or are the voltages / pins totally different?
GX4000 can be powered with either a 9V or a 5V power supply.
The 9V is the one you get (in fact it is 11V) by default with a GX4000, using the scart or modulator output. The 9V power (5.5/2.1mm) plug is the one close to the SCART plug
The 5V is only used when powered from a Plus monitor, using the DIN video output. The 5V power  (5.5/2.5mm) plug is the one on left when looking at the SCART plug.

The 464 only uses 5V (5.5/2.1mm) and you should not use the 9V on it.

So your question is far from being dumb  ;) , and the answer is no !
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 23:45, 21 July 15
if i buy one of these rs components psu's for my gx4000 +c4cpc will i be able to use it to power my newly purchased cpc 464 with scart lead or are the voltages / pins totally different?

Do you have a link to the rs psu you intend buying?

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ImpaledGryphon on 04:23, 23 July 15
Do you have a link to the rs psu you intend buying?

Bryce.


this was the one recommended on here for the gx4000 running rf or scart with a c4cpc ECP-11-9U | 9V dc, 1 Output, Switch Mode, ErP Compliant, Plug In Power Supply, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/)


as for the cpc464, i only bought it the other day (as i said when i got here, i felt a bit of a fraud having only ever owned a gx4000), just a working unit with a scart cable and 30 games but no psu or monitor and sadly on ebay i can only find one seller and they don't have the psu separately, only with another scart lead which i don't need so i need an alternative, either one i already own for another system or a new 3rd party one.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ImpaledGryphon on 04:26, 23 July 15
GX4000 can be powered with either a 9V or a 5V power supply.
The 9V is the one you get (in fact it is 11V) by default with a GX4000, using the scart or modulator output. The 9V power (5.5/2.1mm) plug is the one close to the SCART plug
The 5V is only used when powered from a Plus monitor, using the DIN video output. The 5V power  (5.5/2.5mm) plug is the one on left when looking at the SCART plug.

The 464 only uses 5V (5.5/2.1mm) and you should not use the 9V on it.

So your question is far from being dumb  ;) , and the answer is no !


thank you for the very clear explanation, now i know i need to find an alternative psu to run the 464.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: onofrix on 17:38, 04 August 15
Do you think i can use the snes/nes power supply for the gx4000 with c4cpc?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 17:46, 04 August 15
Do you think i can use the snes/nes power supply for the gx4000 with c4cpc?

Definitely NOT. The SNES PSU outputs AC and the GX4000 needs DC.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: onofrix on 04:51, 05 August 15
Definitely NOT. The SNES PSU outputs AC and the GX4000 needs DC.

Bryce.
Ouch! I used to think that snes was DC. Thanks.

And maybe this one?:
dc adaptor (http://www.amazon.es/gp/aw/d/B00MVLJ6NI/ref=mp_s_a_1_3?qid=1438739007&sr=8-3&pi=SY200_QL40&keywords=arduino+power&dpPl=1&dpID=41Gpd%2BN6SEL&ref=plSrch)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 10:22, 05 August 15
The SNES is DC inside, but the transofrmer only supplies AC and it's converted inside the SNES.

Yes, that other one looks fine.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 15:16, 05 August 15
Do you think i can use the snes/nes power supply for the gx4000 with c4cpc?


NO!


The SNES PSU outputs AC. You'll fry the GX.



Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: schombi on 21:16, 05 August 15
For whatever reason my GX4000 does not power up with the 1.5A PSU set to 9V. The next higher value is 12V and here everything works. Is that too high?

By the way, my GX4000 has one power connector only (2.1mm, the one I´m using). The left one is blanked off.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 22:02, 05 August 15
For whatever reason my GX4000 does not power up with the 1.5A PSU set to 9V. The next higher value is 12V and here everything works. Is that too high?
12V is OK, but the 5V internal regulator will have to dissipate more power.
When you say the GX4000 does not power up, are you sure that's not just the TV that does not switch to the scart/RGB input ? Can you force it ?
9V may be too weak for the TV to detect the commutation signal.

By the way, my GX4000 has one power connector only (2.1mm, the one I´m using). The left one is blanked off.
Interesting. Do you have the DIN connector ?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: schombi on 22:46, 05 August 15
Thanks Gerald.

No, with 9V not even the LED on the GX4000 turned on. I believe my console is from Spain.
[attachimg=1]
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 23:22, 05 August 15
Thanks Gerald.

No, with 9V not even the LED on the GX4000 turned on. I believe my console is from Spain.
[attachimg=1]
That's really strange. The led is powered by the 5V regulator, after the power switch.
Is it working well with 12 V ? If so I am wondering if your power supply is really providing 9V on the 9V setting. Do you have a multimeter to check ?

According to the photo, you have the 5V input, just remove the rubber if you want to use it  ;)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 23:37, 05 August 15
I'd say his PSU isn't supplying what it says. Measure the actual voltage under load, I bet it's way off.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 12:48, 06 August 15
I'd say his PSU isn't supplying what it says. Measure the actual voltage under load, I bet it's way off.

Bryce.


Multivoltage PSU's often don't supply the same amount of amps throughout the voltage range. The higher you set the voltage, the lower the amp rating will drop.


That's why fixed voltage PSU's are always better. You know exactly what the output will be (well if it's not some Chinese deathtrap anyway)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 14:10, 06 August 15
That's the difference between "up to" and "@" on the specs. The proper way to state the power is in VA.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ImpaledGryphon on 15:39, 04 September 15
GX4000 can be powered with either a 9V or a 5V power supply.
The 9V is the one you get (in fact it is 11V) by default with a GX4000, using the scart or modulator output. The 9V power (5.5/2.1mm) plug is the one close to the SCART plug
The 5V is only used when powered from a Plus monitor, using the DIN video output. The 5V power  (5.5/2.5mm) plug is the one on left when looking at the SCART plug.

The 464 only uses 5V (5.5/2.1mm) and you should not use the 9V on it.

So your question is far from being dumb  ;) , and the answer is no !


hi, i bought the recommended rs psu for my gx4000 but for the cpc 464 i'm now a bit confused


you say the plus monitor provides 5v on a 5.5/2.5mm plug but then say the 464 uses 5v on a 5.5/2.1mm plug is that right because i do have a 5v 1amp psu with a 5.5/2.1mm plug so will that power my 464 using a cool novelties amstrad 464 scart cable and is 1amp enough or should i get a higher ampage one?

Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 23:30, 07 September 15
One amp (claimed = rarely fulfiled) is cutting it close. It might manage to power the CPC alone, but don't attach any expansions. It might also have problems loading tapes.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: dragon on 19:34, 18 September 15

NO!


The SNES PSU outputs AC. You'll fry the GX.

Many many years ago when i was child(and ignorant :D). I friend gift me her spectrum 48k. we are in idiot mode and connect my snes transformer to the spectum. I remember the scene perfectly. spectrum on-> !!!!!!broommmmmmmm!!!!!. sound in the spectrum. Next i remember the big hole in the middle of the spectrum chip near the dc connector. And the keyboard connectors toaster. But yeah !!the speaker made sound with tapes!!. I never view the spectrum signal in the tv.

This day i learn snes adapter bad bad idea to other electronics.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 22:07, 18 September 15
Many many years ago when i was child(and ignorant :D ). I friend gift me her spectrum 48k. we are in idiot mode and connect my snes transformer to the spectum. I remember the scene perfectly. spectrum on-> !!!!!!broommmmmmmm!!!!!. sound in the spectrum. Next i remember the big hole in the middle of the spectrum chip near the dc connector. And the keyboard connectors toaster. But yeah !!the speaker made sound with tapes!!. I never view the spectrum signal in the tv.

This day i learn snes adapter bad bad idea to other electronics.

Yes, but if you still have the Spectrum I'll fix it :)

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: dragon on 16:33, 19 September 15
Yes, but if you still have the Spectrum I'll fix it :)

Bryce.


Oh trash have it years ago :( (idiot mode 3 jeje). But my favorite idiot mode is the four, taking my cousing with the third flour of her house full of dragons, and give me none and end all in the trash.


jajaja.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Lee stewart on 17:38, 14 October 15
would a 12v 500ma psu be too much for the console to handle?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 17:52, 14 October 15
would a 12v 500ma psu be too much for the console to handle?

No, in fact it would be too little. The 12V wouldn't be an issue because there's a regulator in the GX4000 on the 11V input bringing it back down to 5V, but 500mA is not enough.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: mickcris on 20:07, 19 November 15
nevermind.  see my question answered in the 1st post.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Neil79 on 17:52, 02 December 15
Question :


I've recently purchased this for my Amstrad 464 Plus, is it ok to use this with a C4CPC?
AMSTRAD CPC 464 & 6128 + (PLUS MODELS) TV CONNECTION KIT - PSU ADAPTER & SCART | (http://www.ebay.co.uk/itm/390531959470?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT)


Can I use that PSU with a GX4000 + C4CPC?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: CraigsBar on 17:58, 02 December 15
Question :


I've recently purchased this for my Amstrad 464 Plus, is it ok to use this with a C4CPC?
AMSTRAD CPC 464 & 6128 + (PLUS MODELS) TV CONNECTION KIT - PSU ADAPTER & SCART | (http://www.ebay.co.uk/itm/390531959470?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT)


Can I use that PSU with a GX4000 + C4CPC?
If you have a cm14 then yes. If you need to use the scart on the gx4000 then no, that needs to use the 11v supply
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Neil79 on 18:08, 02 December 15
If you have a cm14 then yes. If you need to use the scart on the gx4000 then no, that needs to use the 11v supply


I've got a scart cable, so I've ordered this for the GX 4000 + C4CPC


9V dc, 1 Output, 2.1 x 5.5 x 9.5 mm Centre Positive Switch Mode, Plug In Power Supply, 1.22A, 11W


ECP-11-9U | 9V dc, 1 Output, 2.1 x 5.5 x 9.5 mm Centre Positive Switch Mode, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/)


 ;D
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 18:58, 02 December 15
That simple simple  ;D

If you use the GX4000 scart output, you need to use the 9V supply input. (5.5mm/2.1mm positive on center)
If you use the GX4000 DIN output (to a CM14 or a TV with adapter cable), you need to use the 5V supply input. (5.5mm/2.5mm positive on center)

Both power supply should provide at least 750mA.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 21:21, 02 December 15



ECP-11-9U | 9V dc, 1 Output, 2.1 x 5.5 x 9.5 mm Centre Positive Switch Mode, (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/)


 ;D




Good to see people getting the message about paying extra for good supplies from RS. Last week I took apart some cheap 9v supplies for a future video and one of them contained wholly recycled parts including wires still attached! Soldering was so bad it looked like I'd put it together myself! On the outside it claimed to have all the relevant approvals etc but clearly was just rubbish.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Neil79 on 17:52, 03 December 15
wow, that power supply arrived fast  :o


Only ordered it yesterday at 4pm!
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 19:21, 03 December 15
wow, that power supply arrived fast  :o


Only ordered it yesterday at 4pm!


RS don't mess around. That's why the pros use them.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Neil79 on 20:30, 03 December 15

RS don't mess around. That's why the pros use them.


Indeed! Only down side can't find my bloody GX 4000 scart lead  :picard:


Can the Amstrad 464 Plus Scart kit work with it?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: CraigsBar on 20:38, 03 December 15
Mine does not work with either 5v or 9v and the CPC+ scart cable no.

5v only works on a cm14
9v only works with a scart to scart cable
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 23:00, 03 December 15

Indeed! Only down side can't find my bloody GX 4000 scart lead  :picard:




How can you not have 50 SCART leads in your house. Did you not live through the 90's?  :D
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Neil79 on 23:05, 03 December 15

How can you not have 50 SCART leads in your house. Did you not live through the 90's?  :D


I moved..


Alot  :laugh:
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: CraigsBar on 23:12, 03 December 15



I moved..


Alot  [emoji23]

ROFL!
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 13:21, 09 February 16
Sorry to open this up again. My C4CPC has arrived, I have my GX4000 and 6128 Plus.


My plan is to do the following:


Connect my 6128 Plus directly into the original Amstrad colour monitor it came with, and connect the C4CPC, will this work?


Connect my GX4000 to my big Samsung Telly, using no additional kit, other than the SCART and PSU that came bundled with the GX4000, attach the C4CPC, will this work?


Connect my GX4000 to my Amstrad colour monitor and connect the C4CPC, will this work?


Sorry, but I have a terrible track record of GX4000's blowing up on me, thanks in advance.


 



Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 13:38, 09 February 16
Connect my 6128 Plus directly into the original Amstrad colour monitor it came with, and connect the C4CPC, will this work?
Yes

Connect my GX4000 to my big Samsung Telly, using no additional kit, other than the SCART and PSU that came bundled with the GX4000, attach the C4CPC, will this work?
It should, but for how long  ??? A new power supply should be better.

Connect my GX4000 to my Amstrad colour monitor and connect the C4CPC, will this work?
Yes


Sorry, but I have a terrible track record of GX4000's blowing up on me, thanks in advance. 
I would be interested in knowing the blowing condition  :)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 13:51, 09 February 16
I would be interested in knowing the blowing condition  :)


I've bought several GX4000's over the years, and for some unknown reason, I plug them into the mains, as I've done with all my other GX4000's and the PSU gives off a burning smell, and the PSU is dead.


The GX4000 is still fine, as I just use my other working PSU's.


What PSU would you recommend for plugging in the C4CPC>GX4000>TV setup, and is it true that the C4CPC will be damaged if you use the original Amstrad PSU that comes with it, as I've built up quite a few over the years, and it's a shame I can't just use those.     
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 14:16, 09 February 16
I've bought several GX4000's over the years, and for some unknown reason, I plug them into the mains, as I've done with all my other GX4000's and the PSU gives off a burning smell, and the PSU is dead.


The GX4000 is still fine, as I just use my other working PSU's.
Ok, only the PSU failed.
What PSU would you recommend for plugging in the C4CPC>GX4000>TV setup, and is it true that the C4CPC will be damaged if you use the original Amstrad PSU that comes with it, as I've built up quite a few over the years, and it's a shame I can't just use those.   
http://www.cpcwiki.eu/forum/amstrad-cpc-hardware/%28please-read%29-gx4000-with-original-power-brick-and-c4cpc/msg100199/#msg100199

You can also get a arduino compatible one (9V 5.5/2.1 mm, positive on center pole)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 15:26, 09 February 16

I've bought several GX4000's over the years, and for some unknown reason, I plug them into the mains, as I've done with all my other GX4000's and the PSU gives off a burning smell, and the PSU is dead.




It is not "some unknown reason". The PSU's are trash. We widely shout about this on this forum and yet people still insist on using them.


If you are using an original GX4000 PSU then its not a question of IF it will fail, but WHEN. Be thankful it didn't take the console with it.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 17:41, 09 February 16
I see! I've never come across a dead GX4000 console, I've bought several from rain drenched car boot stalls, innards nested with spiders and it still works. I've had PSU's blow, but never damage the GX, maybe it's because I plug all of my devices into surge protectors.


This is me agreeing by the way, the GX4000 and the NES PSU's are crap.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: TFM on 20:46, 11 February 16
I see! I've never come across a dead GX4000 console, I've bought several from rain drenched car boot stalls, innards nested with spiders and it still works. I've had PSU's blow, but never damage the GX, maybe it's because I plug all of my devices into surge protectors.

This is me agreeing by the way, the GX4000 and the NES PSU's are crap.


Good to read that not every PSU blow will kill the GX actually.  :)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 17:19, 12 February 16
I'm not stating that it can't happen, but I think people tend to be overly cautious about these things.


The first electrical job I ever had was repairing monitors and PCB components. The first thing you notice on day one, is that everyone is wearing anti-static wrist bands, earthed to the desk. but if you ask 'em why, they don't fully understand, but often say "it's the build up of static from the human body, it will zap the chip if we don't wear it". I later read that today's (This was in 1995) Microchips are built to be protected from ESD, but the problem is bigger, we shouldn't call it "static," we should call it "charge imbalance". Just having charged particles is not enough to damage a chip, but Anti-Static wrist bands are worn as a belt braces style approach. Like an insurance policy.


I think because earlier microchips were probably more susceptible, the human brain can't move on, and trust that ESD is perhaps a thing of the past. It's the same with compressing files on a disk, within windows, everyone is like "Don't do that, the machine will run like a dog". Yes, that's is probably correct, if running on a Pentium 75, but with today's technology and i5 or i7 CPU's and Solid state drives, that's complete BS!


     
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: TFM on 19:02, 12 February 16
Well, touching the surface of a "just" switched on CRT and a chip with the other hand at the same time, that will give one a 100% chance for the chip to die. If it's "just" the joystick port one touches, then even the circuit paths will roll up. [nb]I tell this from early years experience.[/nb]. So being careful is for sure a good thing. However, I'm really curious how much % of the GX4000 actually died when their original PSU broke, it seems the percentage is pretty high, but not 100%. Well, I guess I better be careful and get a nice PSU ahead of time.  :)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 23:14, 12 February 16
The anti-static band is still needed today. It's not some myth from the past. Chips are still static sensitive, but the chances of it happening are much lower than many may think. You could work without the band for many years without  a problem, but commercial production and repair will still insist on using them, because if you do zap a chip, you only find out when the device is already built/repaired and by then you have wasted time/money/resources for nothing or if the IC you are working with costs a few hundred or even thousand Euros, then you don't want to take any chances. If a €5 band can save you hours or 100's of euros, then why wouldn't you use it. Today other less obvious steps are also taken, such as anti-static flooring, anti-static furniture etc that makes the band less important.
I still earth myself through a band for most work that involves particularly sensitive or expensive parts, but once the parts are soldered to a PCB they are much less likely to be damaged by static anyway.

The problem with the GX PSU couldn't be a static problem. Most likely the PSU just spiked to a much higher voltage when it died. C64 PSUs are famous for doing this.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: TFM on 23:29, 12 February 16
Instead of a wrist band (do this only if you don't have one!) it also helps to put one hand on a water pipe or heating unit (water heating). Because both are supposed to be "earthed".  :)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 23:38, 12 February 16
Instead of a wrist band (do this only if you don't have one!) it also helps to put one hand on a water pipe or heating unit (water heating). Because both are supposed to be "earthed".  :)

But, but.... I only have two hands. One for the soldering iron and the other for my glass of whisky :)

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: TFM on 23:55, 12 February 16
Yes, well, you need a switch mode hand then...  :-X :-X :-X
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 18:41, 17 February 16
Like I said, the wrist band is like an insurance policy. I've seen companies with anti-static floors, furniture and wrist bands... Clueless!


Anyway, messing around with old retro tat, I think I'll give the wrist band a miss  :D 
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 22:33, 17 February 16
Like I said, the wrist band is like an insurance policy. I've seen companies with anti-static floors, furniture and wrist bands... Clueless!

Why is that clueless? If the engineer is handling some stupidly expensive part, then he should be wearing a band even if the entire lab is anti-static. He only needs to be wearing the wrong t-shirt to destroy that component in his hand.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 23:46, 17 February 16
Why is that clueless? If the engineer is handling some stupidly expensive part, then he should be wearing a band even if the entire lab is anti-static. He only needs to be wearing the wrong t-shirt to destroy that component in his hand.

Bryce.


Please see my earlier post about such things.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 00:06, 18 February 16

Please see my earlier post about such things.

I did, but you are underestimating the issue. There is nothing clueless about using anti-static bands, they are still very much a requirement if you want to protect your product properly. Even with all the anti-static furniture etc, a person can still be holding a substantial charge that could fry his prototype. Having the furniture etc is pointless if you ignore a potential source of charge. It's like double locking the front door and leaving the back door open.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 00:15, 18 February 16
I'd need to see proof of such a claim. It reminds me when Curry's the electrical store were claiming their Gold HDMI cables were superior to normal cables... When it is just data, 1's and 0's. 
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 10:26, 18 February 16
Ok, then let me explain it further. Everything has a charge. As you know, when the charge between two objects is large enough, you will feel and even see the discharge between two objects. Now imagine you walk into a room where everything is at the same potential, but you are charged to a different potential. You go to pick up a component from an earthed desk and bam, you just discharged through that component and it's now only good for the bin. The room is anti-static, but you brought the charge with you.

One thing that many people seem to get confused about is the different types of protection, mainly because they all get called "anti-static". There are three main types of protection. The first is "anti-static" such as the carpet. This material won't discharge you!, it only avoids a charge from building up due to it's material. Then there is "dissipative anti-static" such as the green mats we use on the work surface. These will discharge you (without the ow! effect) and anthing put on them because they have a high-impedance path to ground, just like the arm band (there's a 10M resistor in that yellow telephone cord). The third is anti-static shielding, such as those metalic silver bags that electronics are delivered in. These will not let a charge go through them so that they protect the device (the pink bags are only anti-static like the carpet, not a shield).

So without the band, you are still carrying a charge around with you. Touching the work surface will discharge you and you will stay (mainly) discharged if the room has the right carpet etc. However, touching anything (including another person) before you are grounded, even in the best anti-static room can still cause issues. Or even worse, someone walks in and touches you, then they've "recharged" you even though you had discharged yourself before. Having the band ensures that you are always discharged before you touch the device.

This is not third-hand information or internet wisdom, I have worked most of my life in anti-static environments and seen devices die due to the lack of proper anti-static policies. In fact I'm sitting in one of those rooms right now as I type this :)

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 11:31, 18 February 16
That doesn't prove anything, and what proof have you that the human body can produce enough charge imbalance to damage an IC?


Sent from my iPhone using Tapatalk
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 11:53, 18 February 16
Ah, you are questioning whether it's possible at all?? Well that's pretty easy to measure with an electrometer, but even without fancy equipment, you can estimate it using Paschen's Law. To get a spark at all you need around 500V. From experience I can tell you that the less painful sparks are around 3000V and the real "whacks" that you feel can be north of 20KV.
Considering that the components in question are made for 5V or less and rarely withstand anything above 9V, that discharge will definitely fry the part if the shortest route is through the component.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 11:58, 18 February 16
That doesn't prove anything, and what proof have you that the human body can produce enough charge imbalance to damage an IC?
What king of proof do you expect ? I mean, what is your level of understanding on what happen within a IC when exposed to ESD.
Not having fried an IC in your life does not mean you will never do it in the future.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 13:19, 18 February 16
What king of proof do you expect ? I mean, what is your level of understanding on what happen within a IC when exposed to ESD.
Not having fried an IC in your life does not mean you will never do it in the future.


Supporting evidence...
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 13:36, 18 February 16
Define supporting evidence? You can prove it yourself. Put on some wooly socks, shuffle your feet on the ground and then touch something that's earthed. The fact that you feel anything at all means that it's already above what any standard IC can take. Now grab any datasheet and check what the maximum voltages are. You've just proved the theory.

Or what process would you require as proof?

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 13:59, 18 February 16
Define supporting evidence? You can prove it yourself. Put on some wooly socks, shuffle your feet on the ground and then touch something that's earthed. The fact that you feel anything at all means that it's already above what any standard IC can take. Now grab any datasheet and check what the maximum voltages are. You've just proved the theory.

Or what process would you require as proof?

Bryce.


I wan't to know if the charge from a human is enough to zap an IC. How do you know it's above what the IC can take, are you aware of + and - charge of sodium and potassium ion's. Where in your hypothesis does it list the well documented evidence, for all activities mentioned, that the level of charge from a human, is dangerous to an IC?

How many millivolts do you think the human body can produce? 

Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: robcfg on 15:18, 18 February 16
It's not how much the body can produce, but how much can go through it if the body is the path of least resistance for an electron flow...


Never happened to you to try to shake someone's hand and get a spark between your hands?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 16:11, 18 February 16

I wan't to know if the charge from a human is enough to zap an IC. How do you know it's above what the IC can take, are you aware of + and - charge of sodium and potassium ion's. Where in your hypothesis does it list the well documented evidence, for all activities mentioned, that the level of charge from a human, is dangerous to an IC?

How many millivolts do you think the human body can produce? 

Millivolts?? I'm sure you've had that experience where a visible spark jumped from your finger to the door knob (if the room is dark enough). Well that means that your body had a charge of at least 500V (Paschen's Law) otherwise there wouldn't have been a spark. I remember an experiment back in my school days where we measured all the pupils with an old fashioned Electrometer and we managed to get well into the kilovolt range. So yes, the body can easily produce a voltage many orders of magnatude above what an IC could take.

Yes, I am well aware of how ionic charge works. However, I don't see what it has to do with this subject.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: seanb on 16:22, 18 February 16
Ah making sparks from my hands onto metallic objects in maths.

Got into trouble because I was zapping anyone that walked past.

Wished I'd worked harder instead now.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 16:29, 18 February 16
The human body can produce 10 to 100 millivolts, when you convert 100 to volts the result is 0.1 volts. So I don't see how Paschen's Law is relevant, as that discusses the amount of voltage needed over distance of objects. 
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 16:30, 18 February 16
Ah making sparks from my hands onto metallic objects in maths.

Got into trouble because I was zapping anyone that walked past.

Wished I'd worked harder instead now.


Yeah, but your body wasn't producing 500 volts as suggested. 
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: seanb on 17:24, 18 February 16
I wasn't saying anything of the sort.
This conversation reminded me of doing that and I decided to share.
Nothing more.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Munchausen on 17:40, 18 February 16
The human body can produce 10 to 100 millivolts, when you convert 100 to volts the result is 0.1 volts. So I don't see how Paschen's Law is relevant, as that discusses the amount of voltage needed over distance of objects.

The human body isn't producing the voltage, just carrying it for a while, it's an electrostatic charge. There's a lot of stuff about this online: https://www.google.co.uk/search?q=static+electricity+measurement+on+human+body (https://www.google.co.uk/search?q=static+electricity+measurement+on+human+body)

But I think you might be trolling  :o
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 22:34, 18 February 16
The human body can produce 10 to 100 millivolts, when you convert 100 to volts the result is 0.1 volts. So I don't see how Paschen's Law is relevant, as that discusses the amount of voltage needed over distance of objects.

Now you are just splitting hairs to try and justify an invalid point, but ok, if that's what you mean by "producing" then yes, the body (on its own) can only produce millivolts, but here we are talking about what charge the body can build up and store, and that is many Kilovolts. Who cares how it was produced, the main thing is that the charge is there, it is stored in a human body and it can destroy ICs so needs to be removed and the most effective way of doing this is with a wristband.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 22:59, 18 February 16
The human body isn't producing the voltage, just carrying it for a while, it's an electrostatic charge. There's a lot of stuff about this online: https://www.google.co.uk/search?q=static+electricity+measurement+on+human+body (https://www.google.co.uk/search?q=static+electricity+measurement+on+human+body)

But I think you might be trolling  :o


That's because you don't understand... 
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 23:04, 18 February 16
Now you are just splitting hairs to try and justify an invalid point, but ok, if that's what you mean by "producing" then yes, the body (on its own) can only produce millivolts, but here we are talking about what charge the body can build up and store, and that is many Kilovolts. Who cares how it was produced, the main thing is that the charge is there, it is stored in a human body and it can destroy ICs so needs to be removed and the most effective way of doing this is with a wristband.

Bryce.


You still haven't answered the question?


No I'm not splitting hairs, you're not answering or understanding the reasoning behind it. Now you're switching and describing a scenario of a conduit. Go over my posts and clearly show me where I am splitting hairs?


I'm happy to leave it there, for the good of the forum.   
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 23:22, 18 February 16
Ok, I've reread the thread. Your original comment was that people who use anti-static bands are clueless. I then attempted to explain why that's not the case. You then went off on a tangent about the ionic charge of Potassium or something?? No idea where that one was going?? And your current discussion is the source of the charge that causes static discharge from a human and the definition of the word "produce".

To put it as simple as I can: Humans are one side (plate) of a massive capacitor. The other side happens to be the planet we're standing on. This capacitor tends to charge itself (usually unnoticed) from many different (well documented and proven) physical effects, up to several thousand volts. Discharging this massive capacitor through an IC is a bad idea, especially if it an expensive component. Wearing a wrist band greatly reduces the chance of this happening by connecting a resistor across the capacitor. So no, it's not clueless, it's quite sensible actually.

If I truely have mis-understood what your question is, then please do inform me.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 23:38, 18 February 16
Ok, I've reread the thread. Your original comment was that people who use anti-static bands are clueless. I then attempted to explain why that's not the case. You then went off on a tangent about the ionic charge of Potassium or something?? No idea where that one was going?? And your current discussion is the source of the charge that causes static discharge from a human and the definition of the word "produce".

To put it as simple as I can: Humans are one side (plate) of a massive capacitor. The other side happens to be the planet we're standing on. This capacitor tends to charge itself (usually unnoticed) from many different (well documented and proven) physical effects, up to several thousand volts. Discharging this massive capacitor through an IC is a bad idea, especially if it an expensive component. Wearing a wrist band greatly reduces the chance of this happening by connecting a resistor across the capacitor. So no, it's not clueless, it's quite sensible actually.

If I truely have mis-understood what your question is, then please do inform me.

Bryce.


Obviously you didn't read it!

And you've just described a type of insurance policy.
As mentioned in a post earlier on, I’m not stating that it can't happen. I stated it’s clueless to have desks, floors and Wrist bands! I don't recall calling people clueless, so where did I call them clueless? In a large company you're forced to wear them. This is a belt a braces style approach, that companies instil, especially medium to large companies, who don't fully understand, and go overkill i.e. Belt and braces.

I said, and I quote “The first electrical job I ever had was repairing monitors and PCB components. The first thing you notice on day one, is that everyone is wearing anti-static wrist bands, earthed to the desk. but if you ask 'em why, they don't fully understand, but often say "it's the build up of static from the human body, it will zap the chip if we don't wear it". I later read that today's (This was in 1995) Microchips are built to be protected from ESD, but the problem is bigger, we shouldn't call it "static," we should call it "charge imbalance". Just having charged particles is not enough to damage a chip, but Anti-Static wrist bands are worn as a belt braces style approach. Like an insurance policy.”
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 23:51, 18 February 16
This is where you called them clueless:
Like I said, the wrist band is like an insurance policy. I've seen companies with anti-static floors, furniture and wrist bands... Clueless!

Anyway, messing around with old retro tat, I think I'll give the wrist band a miss  :D

Anyway, ignoring that, to answer the question/comment directly: Firstly, yes ICs are more robust these days, but definitely not safe, they are still easily destroyed by static discharge, it happens regularly. It's not really "belt and braces" because all the other measures taken, such as anti-static carpet/furniture only reduce the chance of charging "the human capacitor", the band is the only device that actually safely and permanently discharges the capacitor.

The last comment about the mis-understanding is of course correct, many people who wear them don't really understand why. But that doesn't make them any less necessary.

Bryce.
Title: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 00:06, 19 February 16
I was calling the companies clueless, and it feels as though you tried to twist my words around. I.e. The process and expense needed for all three.


Sent from my iPhone using Tapatalk
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 00:25, 19 February 16
I was calling the companies clueless, and it feels as though you tried to twist my words around. I.e. The process and expense needed for all three.


Sent from my iPhone using Tapatalk

No, I didn't want to twist your words, I just interpreted it wrong.

Regarding the expense. I have worked with some massive electronics companies over the years and believe me, they are vultures. If they could save half a cent from production costs by sawing a leg off the table they would. If you look at it economically. If I have 100 workers handling a 500 dollar device and  2 of these die a year due to static discharge, but only one or none per year when I implement a 50cent wristband, then I'd be stupid not to.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Gryzor on 17:48, 25 February 16
The original quote was:


Quote
I've seen companies with anti-static floors, furniture and wrist bands... Clueless!


By any reasonable reading this doesn't mean "they wear them without knowing what for, but the devices they employ are still good". It means they shouldn't be doing it, so if anyone (and, I guess, all of us) misunderstood it it's not our fault.


But then your whole process of argumentation was about "proving" etc etc which was totally irrelevant to whether these people are clueless or not, or whether they know or not why they're wearing bands.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 19:32, 25 February 16
But, as the conversation evolved, it got bogged down with other things as well.


When you ask the facilities managers or people with the budget, who installed all this stuff, they haven't got a clue why, other than we need it. Believe me, check my linkedin profile if there's any doubt, I've worked for many technology companies, especially international. Even the engineers don't understand the principle behind why, they're just instructed to wear, so they do. It's quite scary, but as mentioned, it's became a status quo, nobody ever questions why?


   
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Gryzor on 19:36, 25 February 16
By the way, I've seen a board being fried because of static; I was re-harnessing an arcade cab to be used as a MAME machine. The cab was on a rug that looked very static-friendly, and the board was unscrewed and ready to be removed. Another guy went it and took it out. I do think I saw a led flashing for a fraction of a second as he grabbed it, though I'm not sure; the board, however, did not work afterwards: it would turn on but wouldn't give out any signal. We didn't mind because it was some shitty clone on a dual-ROM board that was covering for an illegal gambling game, but it was telling..
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 22:13, 25 February 16
But, as the conversation evolved, it got bogged down with other things as well.


When you ask the facilities managers or people with the budget, who installed all this stuff, they haven't got a clue why, other than we need it. Believe me, check my linkedin profile if there's any doubt, I've worked for many technology companies, especially international. Even the engineers don't understand the principle behind why, they're just instructed to wear, so they do. It's quite scary, but as mentioned, it's became a status quo, nobody ever questions why?


The facility manager isn't required to know the specific reason behind everything he's told to order, but if any of my Engineers admitted they didn't understand a basic principle of physics such as static discharge, I'd seriously question whether they should be working there at all.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: 1024MAK on 18:45, 28 February 16
Not knowing the details when it comes to electricity and electronics is not that uncommon for lay people. Even for  some who are not considered to be uneducated.

In the industry where I work, we are working on electrical systems all the time. Sometimes we work on electronic systems (mainly "change a card" type work). But if I was to ask "using ohms law, work out....", a lot of them would not be able to answer. Even though they are suppose to have either demonstrated this knowledge when they joined, or went on training that included electrical and electronic basic theory....

This static discharge chat, reminds me about a complaint from an operator in a control room. He asked "can you check the earthing, I keep getting electric shocks from the control panel". So without thinking about it, I went and got the schematics out and had a look to see how it was earthed.

Then I remembered that all the 24V indication lamps are fed from a earth return 24V AC power system. Sure enough, in the rear of the control panel, a large cable acts as bothe the earth return and the return supply conductor for the 24V AC supply.

When I returned to inform the operator, I noticed that he was using his chair (which had rollers on) to move around without getting up out of it. This must have been causing a static charge to build up. Of course when he touched the metal control panel, the static charge discharged via his hand to the earthed panel...  :laugh:

Two things not talked about:-
Man made fibres used in carpet and clothing are known to generate high levels of static voltage.
With semiconductors, a high voltage can (and does) "punch" a hole through the insulated gate in metal oxide transistors (like in ICs made using CMOS technology). You even have to take precautions with individual discrete FETs.
Yes, modern ICs often have diodes connected to the input pins, that try to shunt the charge to the power pins. But they can only carry a relatively small current. If the amount of energy resulting from the discharge is too great, they may fail.

Mark


Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 02:42, 29 February 16

The facility manager isn't required to know the specific reason behind everything he's told to order, but if any of my Engineers admitted they didn't understand a basic principle of physics such as static discharge, I'd seriously question whether they should be working there at all.

Bryce.

Most managers come from a technical background, the one I'm talking about certainly did. The staff I presume, would never admit to it then... Especially since you'd probably sack 'em. By the way, and I've mentioned this a few posts back, it not technically correct to call it static discharge, it's known in the field as charge imbalance, i.e. The result from an imbalance of protons and electrons [emoji6]


Sent from my iPhone using Tapatalk
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 11:06, 29 February 16
Technical managers would have a technical background, but not a facilities manager (at least where I work).

The technical term used universally and in all technical documents is ESD = Electro-Static Discharge. The proton / electron imbalance you are talking about is the triboelectric effect (also known as contact electrification), which is how the charge built up in the first place. All electron flow is due to a charge difference, otherwise they'd have no reason to flow. ESD is just one of many types of charge imbalance.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Audronic on 09:09, 08 March 16
@Bryce (http://www.cpcwiki.eu/forum/index.php?action=profile;u=225)


ElectroSplattic !!


Ray
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 10:23, 08 March 16
@Bryce (http://www.cpcwiki.eu/forum/index.php?action=profile;u=225)

ElectroSplattic !!

Ray

?? :D

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Gryzor on 12:28, 09 March 16
Was it really necessary to upload the actual video here?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: journey on 15:22, 15 April 16
Hi all,

I'm waiting for GX4000 (with scart) + C4CPC.
In my house here in Italy i've found this power supply:

220v 50hz
Power: 18W
DC output (with switch to): 1,5-3-4,5-6-7,5-9-12V (set to 9v, ok?)
DC 1000mA

It's ok?

Thanks for your reply
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: 1024MAK on 16:55, 15 April 16
Hi all,

I'm waiting for GX4000 (with scart) + C4CPC.
In my house here in Italy i've found this power supply:

220v 50hz
Power: 18W
DC output (with switch to): 1,5-3-4,5-6-7,5-9-12V (set to 9v, ok?)
DC 1000mA

It's ok?

Thanks for your reply
First check the polarity, then check it again. Even better if you can test it with a multimeter. Getting the polarity the wrong way will cause damage to your GX4000.

This sounds like an unregulated power supply unit. It may well be okay, but I suggest you try the 7.5V setting first, as the actual output voltage is higher than the indicated voltage when less than the full load current is being used.

Mark
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: journey on 17:04, 15 April 16
The polary is switchable. Ok so i'll try the 7,5 first
The Power Supply is not stabilized, it is a problem?

Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: 1024MAK on 18:21, 15 April 16
The polary is switchable. Ok so i'll try the 7,5 first
The Power Supply is not stabilized, it is a problem?
No, this should not be a problem, as the GX4000 has internal regulator chips.
Try using the 7.5V setting first. If it works okay, great. The only downside, is the switching voltage for the SCART may be too low. But the output voltages from unregulated (non-stabilised) units varies, so it is difficult to predict.
If it does not work okay, try the 9V setting. Again, if it works, great.
Do NOT use the 12V setting, as the internal regulator in the GX4000 will then run too hot.

Mark
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: journey on 18:36, 15 April 16
thank you very much!
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 18:42, 15 April 16
No, this should not be a problem, as the GX4000 has internal regulator chips.
Try using the 7.5V setting first. If it works okay, great. The only downside, is the switching voltage for the SCART may be too low. But the output voltages from unregulated (non-stabilised) units varies, so it is difficult to predict.
If it does not work okay, try the 9V setting. Again, if it works, great.
Do NOT use the 12V setting, as the internal regulator in the GX4000 will then run too hot.

Mark
7.5 is the working limit of the internal LM7805. It may not work as expected but there is no risk damaging anything.
However, in addition to the polarity, if you have different plugs TRIPLE check that you select the right one : 5.5x2.1mm .
It should go into the power plug just behind the SCART port and you should not be able to put it in the other port. If it plug there, than it's the wrong one, and you may put the 9V supply in the 5V input.
The result is a dead GX4000 and if the Asic is damaged there is no way to fix it.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: journey on 14:20, 16 April 16
[attachimg=2][attachimg=1]now i'm just a little worried...  ???
This is my Power Supply
 
 
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 15:49, 16 April 16
[attachimg=2][attachimg=1]now i'm just a little worried...  ???
This is my Power Supply


Dislike that. Having that multiway connector is a surefire way of killing your GX4000 by having the voltage set to 9v and then accidentally plugging the wrong connector into the 5v port.


How do I know? I did it myself back in the 90's with a similar adaptor from Tandy!


Also no way to verify the quality of that PSU. Generally with multi voltage adaptors the output power varies depends on what voltage is selected. I don't really like using them with retro gear. One mistake and wave goodbye to your kit.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Gryzor on 16:00, 18 April 16
Yup. Did a 2600 in a while ago that way.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: dragon on 17:17, 18 April 16

Dislike that. Having that multiway connector is a surefire way of killing your GX4000 by having the voltage set to 9v and then accidentally plugging the wrong connector into the 5v port.


How do I know? I did it myself back in the 90's with a similar adaptor from Tandy!


Also no way to verify the quality of that PSU. Generally with multi voltage adaptors the output power varies depends on what voltage is selected. I don't really like using them with retro gear. One mistake and wave goodbye to your kit.

Thats the result of use these chinese type adapters :

fried ram
fried gate array
fried crtc
fried rom.
File:AmstradCPC464 Z70375 MC0044D GA40010 PCB Top.jpg - CPCWiki (http://www.cpcwiki.eu/index.php/File:AmstradCPC464_Z70375_MC0044D_GA40010_PCB_Top.jpg)

Is my motherboard result when i put the yours with other name in it in the 80/90. The 464 can be repaired easly the gx4000 not, if asic die it die.

I buy a good 30e adapter and I very happy with it is not hot as the chinese, and is totalle stable voltage. An i have a lot of amperers free.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: brizio on 14:57, 29 April 16
This is what I found on the Italian RS Components website: ECP-11-9E | Alimentatore da parete Switching RS Pro 9V cc, 1.22A, 1 Output, 11W, (http://it.rs-online.com/web/p/alimentatori-plug-in/7262775/)


It is the same one that was suggested in one of the first posts of this thread. It is not cheap but looks good quality and perfect fit for Italy!


Fabrizio
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Phil Smith on 14:34, 30 July 16
Hi I'm interested in obtaining a C4CPC cart. I do have a 9V 1A adapter with a positive connection. I use it for my Atari 2600. It's a cheap one from china. Looking at previous posts one people seems to be buying costs about £15. Is it worth buying one, am I risking frying my GX4000 with a cheap adapter?

Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 15:35, 30 July 16
Hi I'm interested in obtaining a C4CPC cart. I do have a 9V 1A adapter with a positive connection. I use it for my Atari 2600. It's a cheap one from china. Looking at previous posts one people seems to be buying costs about £15. Is it worth buying one, am I risking frying my GX4000 with a cheap adapter?
Regarding the PSU quality, you are not taking more risk with the GX4000 than with the Atari  ;) . The GX4000 has internal 5V regulator, the 9V is only use on the SCART switching signal.
But isn't the Atari using a mono jack connector ?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: chinnyhill10 on 17:17, 30 July 16
Hi I'm interested in obtaining a C4CPC cart. I do have a 9V 1A adapter with a positive connection. I use it for my Atari 2600. It's a cheap one from china. Looking at previous posts one people seems to be buying costs about £15. Is it worth buying one, am I risking frying my GX4000 with a cheap adapter?


Yes. Just read the posts above. Save a few quid on an adaptor and risk repairs or even replacing your hardware.


And you run the risk of burning your house down. The insides of those cheap adaptors are often a mess. I found one that had been assembled from recycled components that had been in other PSU's. Rubbish.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: 1024MAK on 17:36, 30 July 16
The quality of plug in power supply units / mains adaptors varies a lot. If you got it from eBay or Amazon or simular and it was cheap, it is likely to have been manufactured to a price, so quality and safety will have suffered. Some cheap ones I got (to examine to see how bad they were) from eBay had substandard isolation between the 240V mains voltage and the low voltage output. The quality of the components was poor, and the construction was poor as well.

So only buy from well know suppliers in your own country. If you buy an item on eBay from overseas, you are responsible for making sure it is safe, not the supplier. And if it is not safe, the quality of the rest of it is not going to be good either.

Mark
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Phil Smith on 17:38, 30 July 16
Regarding the PSU quality, you are not taking more risk with the GX4000 than with the Atari  ;) . The GX4000 has internal 5V regulator, the 9V is only use on the SCART switching signal.
But isn't the Atari using a mono jack connector ?

The adapter came with an mono jack adapter. Take that off and it fits into the GX4000. I won't try and power it on. I will stick with its original 11V power supply now until I buy a C4CPC. I will try to find an original replacement Atari supply for my VCS and avoid using the cheap china one.

Thanks
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Phil Smith on 17:50, 30 July 16

ECP-11-9U | 9V dc, 1 Output, 2.1 x 5.5 x 9.5 mm Centre Positive Switched Mode (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/)

If I bought this adapter could I use it with my Atari 2600 with my existing mono jack adapter? I will probably get shot asking an Atari question in this post. Just thinking killing 2 birds with one stone rather than killing 2 systems with one plug!!!
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: 1024MAK on 18:52, 30 July 16
ECP-11-9U | 9V dc, 1 Output, 2.1 x 5.5 x 9.5 mm Centre Positive Switched Mode (http://uk.rs-online.com/web/p/plug-in-power-supply/7262750/)

If I bought this adapter could I use it with my Atari 2600 with my existing mono jack adapter? I will probably get shot asking an Atari question in this post. Just thinking killing 2 birds with one stone rather than killing 2 systems with one plug!!!
If the mono jack adapter when connected to the 2.1mm power jack plug results in the correct polarity, I don't see why not.

Mark

Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Audronic on 07:18, 23 August 16
@gerald (http://www.cpcwiki.eu/forum/index.php?action=profile;u=250)


The C4CPC has just arrived here In Williamstown Australia 22-August-2016.
I would like to say that the Package 1 C4CPC Card, Micro SD Card and adapter, plus warning card was well packed and arrived in good condition.
You have done a  wonderful job with this project.
I will be testing it over the next few days.
Well done. ;D


Ray
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Skunkfish on 15:30, 23 August 16
Mine just arrived in work within the last hours or so, looks like a tidy and well-engineered piece of hardware. Information sheet looks useful with the DIP switch settings, it's a shame they don't make DIP switches marked 1, 2, 4, 8...

Looking forward to fitting in my 3D printed case tonight and having a play!
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 18:16, 23 August 16
it's a shame they don't make DIP switches marked 1, 2, 4, 8...
I would love too, and in the right order 8,4,2,1  ;)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: 1024MAK on 09:12, 27 August 16
I would love too, and in the right order 8,4,2,1  ;)
If you pay them enough money, I'm sure one manufacturer would do it for you  :P .

Mark

Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: dragon on 14:05, 27 August 16
Its not more easy the rotatory hex-binary switches :) .


http://eu.mouser.com/Electromechanical/Switches/Coded-Rotary-Switches/_/N-vyke (http://eu.mouser.com/Electromechanical/Switches/Coded-Rotary-Switches/_/N-vyke)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Sykobee (Briggsy) on 13:38, 28 September 16
Hi,


I have a GX4000 and am getting a C4CPC.


I have a Megadrive-compatible PSU - 9V 1.5A + outside. Will this be fine or is the amperage too high?


(Oddly enough my Atari 2600 PSU is 9V 500mA + inside - so clearly that cannot work!)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 13:56, 28 September 16
Hi,


I have a GX4000 and am getting a C4CPC.


I have a Megadrive-compatible PSU - 9V 1.5A + outside. Will this be fine or is the amperage too high?


(Oddly enough my Atari 2600 PSU is 9V 500mA + inside - so clearly that cannot work!)

The Megadrive PSU has the wrong polarity. The GX4000 has the + on the inside.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Sykobee (Briggsy) on 14:06, 28 September 16
Sheesh, I misread the first post...


Luckily I have a 9V 1A negative on outside too! That should be fine.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 16:26, 14 September 17
Hi,


Sorry to re-ignite this old post, but it's power brick and GX4000 related.


I purchased an RS 9V dc, 1 Output, 2.1 x 5.5 x 9.5 mm Centre Positive Switched Mode Power Supply, Plug In Power Supply, 1.22A, but unfortunately this doesn't want to power my GX4000, with or without my C4CPC inserted. The GX4000 powers fine from my Amstrad Plus monitor, has anyone experienced this as the above was actually recommended from the Wiki.


I suppose it could be a faulty adapter, but just wanted to confirm as I bought it a few months back and have only just got around to trying it out.

Thx

Mark


Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 22:26, 14 September 17
I purchased an RS 9V dc, 1 Output, 2.1 x 5.5 x 9.5 mm Centre Positive Switched Mode Power Supply, Plug In Power Supply, 1.22A, but unfortunately this doesn't want to power my GX4000, with or without my C4CPC inserted. The GX4000 powers fine from my Amstrad Plus monitor, has anyone experienced this as the above was actually recommended from the Wiki.


I suppose it could be a faulty adapter, but just wanted to confirm as I bought it a few months back and have only just got around to trying it out.
Can you check that the PSU is working fine : multimeter or some other device powered with 9V ?
It can also be that the internal 5V voltage regulator of your GX4000 is dead and luckily does not let the 9V pass through.
That can also be checked with a multimeter :
- open the GX4000 to access  the power switch (which is doing the switch after the regulator).
- plug the 9V supply (checked working) on the 9V power input and check that you have 5V on one of the 2 pins of the power switch.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ukmarkh on 20:13, 15 September 17
Can you check that the PSU is working fine : multimeter or some other device powered with 9V ?
It can also be that the internal 5V voltage regulator of your GX4000 is dead and luckily does not let the 9V pass through.
That can also be checked with a multimeter :
- open the GX4000 to access  the power switch (which is doing the switch after the regulator).
- plug the 9V supply (checked working) on the 9V power input and check that you have 5V on one of the 2 pins of the power switch.


Hi, thanks for getting back to me, the GX works perfectly through the old Plus monitor, so not sure if this helps, unfortunately I don't have a multi meter to hand to check, I think I have a spare GX4000 somewhere, if I find that I will plug in and test, failing that I'll pop into Maplins, literally a stones throw away from where I live and ask them to check for me or sell me a multi meter.   
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Turboman on 05:45, 28 March 18
I'm in the US and I just got a GX4000, I have not plugged it in yet. What kind of power supply should I use? Can I use a 9v 1A with 110v? or should I get a power supply from the UK that has 220v and use my step down converter?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: pelrun on 06:47, 28 March 18
Only the output voltage matters, so use anything convenient that provides 9-12V DC and more than 0.5A, and has the right polarity on the tip.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Mikebloke on 14:30, 21 June 18
Just got my C4CPC from Gerald  :)


Thought I'd wing it with finding any old multiadapter to replace my original PSU.


Read this topic.


Buying a PSU from RS.


I can afford to wait one more day  ;D
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: asra on 11:45, 18 October 18
hello!


it seems like the recommended PSU has been disontinued.
The replacement recommended by the website is this one but it doesn't have much in the way of stats that I can see:
https://uk.rs-online.com/web/p/ac-dc-adapters/1753315/


Is this one ok too?
I'm sure people buying newer batches will appreciate.


TIA!
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: tjohnson on 11:04, 19 October 18
If you are in the UK something like this will do it - https://www.amazon.co.uk/HW-120100B12W-SWITCHING-POWER-SUPPLY-UE110331DGHW01-R-WHITE/dp/B07D1174TB (https://www.amazon.co.uk/HW-120100B12W-SWITCHING-POWER-SUPPLY-UE110331DGHW01-R-WHITE/dp/B07D1174TB).
I think best to get 2.4mm tip as that stops you inserting it in the 5v hole.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 19:10, 19 October 18
If you are in the UK something like this will do it - https://www.amazon.co.uk/HW-120100B12W-SWITCHING-POWER-SUPPLY-UE110331DGHW01-R-WHITE/dp/B07D1174TB (https://www.amazon.co.uk/HW-120100B12W-SWITCHING-POWER-SUPPLY-UE110331DGHW01-R-WHITE/dp/B07D1174TB).
I think best to get 2.4mm tip as that stops you inserting it in the 5v hole.
You mean 2.1mm tip  ;)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: tjohnson on 20:56, 19 October 18
You mean 2.1mm tip  ;)


I thought the 5v hole was smaller than the 11v hole?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 21:23, 19 October 18

I thought the 5v hole was smaller than the 11v hole?
The outer diameter is identical (5.5mm), the inner pin is 2.1mm on the 11V plug, 2.5mm on the 5V plug.
So you cannot plug the original PSU (11V) on the 5V port (try to push a 2.5mm pin into a 2.1mm hole  ;) )
And 5V on the 11V will not work, but will not harm either.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: mulciberxp on 03:57, 31 October 18
Hi all. My first post. I recently got a GX4000. I've been reading through this thread and I'm seeing that this  (https://uk.rs-online.com/web/p/ac-dc-adapters/7262750/)is the power supply recommended for running the GX4000 + C4CPC. My question is, does anyone foresee any issues with running that through a voltage transformer like this one (https://www.amazon.com/gp/product/B000MWAKVU?pf_rd_p=8e0819a9-0ef1-44cd-9544-a7f28374af8b&pf_rd_r=DVJAPSP06DCSABE1ENYN), since I'm in the US?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: tjohnson on 10:04, 31 October 18
Is there really no 9v psu available in the US ? Seems extreme buying a UK psu.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: RevQuixo on 15:24, 03 November 18
Is there really no 9v psu available in the US ? Seems extreme buying a UK psu.



I just bought this one from Amazon US as it is exactly the same model number as one listed in an earlier post in this thread at RS (in the UK)


https://www.amazon.com/Phihong-PSC12R-090-Wall-Adapter-Interchangeable/dp/B004BF7L8E/ref=sr_1_1?s=industrial&ie=UTF8&qid=1541252107&sr=1-1&keywords=Phihong+PSC12R-090


Seems to meet all the criteria.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: siccoyote on 22:28, 24 January 19
Found a loose gx4000 used a 12v 1.5A Middle Positive PSU on it and it worked fine.

Just got my Boxed one out and it has the original PSU, thinking I should just forget using it.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: LTronic on 21:43, 23 September 19
Hi there,


Getting a looose GX4000 through mail tomorrow.
Could some French people suggest a working/tested power supply from amazon.fr for GX4000 compatible with C4CPC ?


Also, I can't find on the forum where to purchase the C4CPC, am I blind or too tired ?


Thank you very much !
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 22:45, 23 September 19
Getting a looose GX4000 through mail tomorrow.
Could some French people suggest a working/tested power supply from amazon.fr for GX4000 compatible with C4CPC ?
Can't help, not buying from amazon ;)
Also, I can't find on the forum where to purchase the C4CPC, am I blind or too tired ?
Not stock ATM, I can contact you back when its available.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: LTronic on 22:48, 23 September 19
Can't help, not buying from amazon ;)Not stock ATM, I can contact you back when its available.


Yes, please PM me when available again (any ETA ?)
Any other EU based provider for compatible power brick (I need one anyway) ?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: dragon on 02:04, 24 September 19
Hi there,


Getting a looose GX4000 through mail tomorrow.
Could some French people suggest a working/tested power supply from amazon.fr for GX4000 compatible with C4CPC ?


Also, I can't find on the forum where to purchase the C4CPC, am I blind or too tired ?


Thank you very much !


I use these adapter with the plus range. So it should work in the gx4000 and old cpc range.


It have a great amperaje, polarity selection, voltaje selection (with a crystal inserted externally  in the power supply).and multiple connections, so is valid to all cpc even with expansions.


But i buy it in amazon.es.


It have 5v 5.20A for the cpc. 6v.7v.8v,9v,10v,11v,12 all with 5A.

https://www.amazon.fr/NIMO-Adaptateur-Secteur-Universel-R%C3%A9glable/dp/B00AWU9QX0/ (https://www.amazon.fr/NIMO-Adaptateur-Secteur-Universel-R%C3%A9glable/dp/B00AWU9QX0/)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: kriz on 23:37, 22 October 19
HI all :) reading up on this topic, and since i just got my first GX4000 i am on the lookout for a new psu.. The one from RS posted earlier have gone out of production it seems, anyone know an affordable psu with an euro plug available now ? Thanks alot all :) (A simpler version than the one posted above would do fine, no need for many switches, will be used for the gx exclusively :) )
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: kriz on 12:26, 28 October 19
I find an alternative here: https://www.simulant.uk/shop/Amstrad-GX4000-power-supply-psu-replacement-adaptor Available now :)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 12:28, 28 October 19
There's a serious lack of technical (in fact ANY) details on that page.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: kriz on 12:42, 28 October 19
Yeah I agree, but i ordered it and will check it out.. But I agree the lack of details gets me abit worried ..
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: TotO on 13:32, 28 October 19
Prefert a 2.1mm +9V regulated output power supply for this price... (i.e. electric local shop or amazon)
Worst when it's wrote that is your fault if your good quality GX4000 may burn with what is looking to be a cheap molded adapter.
:-\
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: kriz on 17:58, 28 October 19
Yeah I agree on that, seems even more sketchy wheni read it again now .. Btw: I try to just search for " 2.1mm +9V regulated output power supply" but i get too many results is there any just to be recommended ? With Euro plug would be best, I really need to get my electrical skills sorted but I am not so skilled in this area (not the best when you are into retro computers lol) ... Thanks for the input TotO ..
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: kriz on 18:38, 06 November 19
Got the psu adapter i mentioned earlier now, but the sticker showing its voltage and information have been remove, you can still see the sticker residue left from where it was before.. I asked the company about this and this is the reply i get is that i should not worry: it will work, about what voltages it is he would not answer ...

But the psu adapter is very lightweight and without any sticker and no ce cert markings i think it could be hazardous to use .. Check it out please: What do you guys think, should i look for another one ? Anyone can supply a link ?

Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: TotO on 19:59, 06 November 19
simulant have an account here (and other places) for his retro-business, so he can explain why he his selling chines rubbish without any EU conformity and you have to trust and deal with that.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 09:31, 07 November 19
Got the psu adapter i mentioned earlier now, but the sticker showing its voltage and information have been remove, you can still see the sticker residue left from where it was before.. I asked the company about this and this is the reply i get is that i should not worry: it will work, about what voltages it is he would not answer ...

But the psu adapter is very lightweight and without any sticker and no ce cert markings i think it could be hazardous to use .. Check it out please: What do you guys think, should i look for another one ? Anyone can supply a link ?

Eh, it's illegal to sell it then. He removed the sticker so that you can't do a search on Aliexpress where it's probably available for under €1. Send it back.

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: siccoyote on 18:36, 10 November 19
Just checking before I plug my GX4000 in again and try my C4CPC that just came, thanks Gerald.
I have previously been using this to play Burning Rubber (my only game)
(http://i.imgur.com/tHLyJpDm.jpg) (https://imgur.com/tHLyJpD)
Talking with my dad who's got a working history with electronics and he is saying that 12v is too much"If 12v just goes to the 7805, and 500mA is going through, that means the 7805 will have to dissipate 3.5W. That's a fair bit. Would need a big heat sink."So he thinks that you really need a 9v PSU and going higher is riskier.But he has 0 experience with the GX4000.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: siccoyote on 03:19, 11 November 19
Had a play with it with the above adaptor tonight.

It got pretty hot above the 7805.

I've ordered a multi-adaptor so I can do it at 9vhttps://www.amazon.co.uk/gp/product/B017OMEW4Q (https://www.amazon.co.uk/gp/product/B017OMEW4Q)Should come tomorrow so hopefully this will make it run a bit cooler
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: geebus on 13:37, 11 November 19
Hi @siccoyote (http://www.cpcwiki.eu/forum/index.php?action=profile;u=2976) , I've just been reading through this entire topic (including the hilarious back and forth about static discharge etc etc) and the consensus has been from most people NOT to use a variable PSU as they rarely give out the correct voltage. I'm not talking from any experience what so ever, just regurgitating what I've read on here.
I'm looking at getting a new PSU for my newly acquired (yesterday evening) GX4000 as it came with a Euro 220v adapter rather than the UK one. From what i've been reading, I should probably get a new one anyway.
To everyone else; will this "replacement" for the previously linked adapter work ok? Or will the 2a output fry the gx4000? I have no clue about how amps are used within circuitry, but hoping to learn.
https://uk.rs-online.com/web/p/ac-dc-adapters/1753309/ (https://uk.rs-online.com/web/p/ac-dc-adapters/1753309/)

Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 14:52, 11 November 19
To clear up a few things: @siccoyote (http://www.cpcwiki.eu/forum/index.php?action=profile;u=2976) : Your dad's right. The 7805 has to "get rid" of the extra voltage between the input and output voltage (7V difference). The 7805 does have a certain amount of overhead that it needs to be stable (usually about 2V or 3V above the output voltage) so it wouldn't work with a 6V supply, so the most efficient supply for a 7805 would be about 8V. His math's are also correct: Power = Current x Voltage (P=IV) The extra 7V x 0.5A = 3.5W. With the 9V supply the 7805 would only need to sink 2W of excess energy.

@geebus (http://www.cpcwiki.eu/forum/index.php?action=profile;u=2897): Amps are like beer at a party. Just cos you have 100's of litres of it, doesn't mean you have to consume it all (or at least you shouldn't). The amps on a PSU tell you what it can supply, the circuit decides how much it's going to take. So theoretically you could use a 50A PSU on the CPC, but there is an associated risk with doing this. The CPC rarely needs more than about 2 or 3 amps and the traces on the PCB are sized accordingly. If you are using a 3A PSU on you CPC and one of the RAMs gets a short circuit (a common occurance), then the CPC will pull as much current as possible (3A in this case) and the RAM chip will get hot, normally no further damage should occur. However, if you were using a 50A PSU and a short occured, then the current could theoretically rise to 50A (in reality other factors would limit this) and you would fry all the traces off the PCB, something that is extremely difficult to repair.

So much like the beer at a party. Make sure there's enough at hand, but don't over do it. :)

Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: geebus on 16:19, 11 November 19
@geebus (http://www.cpcwiki.eu/forum/index.php?action=profile;u=2897): Amps are like beer at a party. Just cos you have 100's of litres of it, doesn't mean you have to consume it all (or at least you shouldn't). The amps on a PSU tell you what it can supply, the circuit decides how much it's going to take. So theoretically you could use a 50A PSU on the CPC, but there is an associated risk with doing this. The CPC rarely needs more than about 2 or 3 amps and the traces on the PCB are sized accordingly. If you are using a 3A PSU on you CPC and one of the RAMs gets a short circuit (a common occurance), then the CPC will pull as much current as possible (3A in this case) and the RAM chip will get hot, normally no further damage should occur. However, if you were using a 50A PSU and a short occured, then the current could theoretically rise to 50A (in reality other factors would limit this) and you would fry all the traces off the PCB, something that is extremely difficult to repair.

So much like the beer at a party. Make sure there's enough at hand, but don't over do it. :)


Thanks Bryce. That is exactly the way to tell a Scotsman something. Comparing it to alcohol.
Now I know!
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: geebus on 16:56, 11 November 19
This looks like (to the untrained eye i must add!) a good replacement for everyone, using RS online. Just need to add the specific prong type that they have listed too.
https://uk.rs-online.com/web/p/ac-dc-adapters/1361325/ (https://uk.rs-online.com/web/p/ac-dc-adapters/1361325/)
Anyone tell me otherwise?
A little more pricey than I was expecting, but better than frying the GX4000!
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: kriz on 15:24, 13 November 19
I got a repsonse for a Eu plug that is available now from Gerald, check this one out all:

https://fr.farnell.com/xp-power/vel12us090-eu-ja/adaptateur-ac-dc-9v-1-28a/dp/2524419
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: remax on 15:06, 10 December 19
If you are using a 3A PSU on you CPC and one of the RAMs gets a short circuit (a common occurance), then the CPC will pull as much current as possible (3A in this case) and the RAM chip will get hot, normally no further damage should occur. However, if you were using a 50A PSU and a short occured, then the current could theoretically rise to 50A (in reality other factors would limit this) and you would fry all the traces off the PCB, something that is extremely difficult to repair.


that's one thirsty board!
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 15:10, 10 December 19
Short circuits are as thirsty as it gets. Limited only by the thickness of the copper connecting the two poles. Bangs, smoke and strange smells then tell you that the PSU is winning.


Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: remax on 15:13, 10 December 19
Short circuits are as thirsty as it gets. Limited only by the thickness of the copper connecting the two poles. Bangs, smoke and strange smells then tell you that the PSU is winning.


Bryce.


Yeah, i know that, that was just a way to jump on your "beer at a party" analogy  :D
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: Bryce on 16:03, 10 December 19
Ah, I forgot I'd written that above, so the joke went right past me. :)


Bryce.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: ultrasteve on 14:37, 02 March 20
I was using a 9V supply with the standard SCART to SCART connection and the C4CPC. I'm interested in getting one of Duke's Imperium Solo adapters, but he tells me I need to power via 5V.


If I got a Retro Computer Shack PLUS RGB DIN to SCART and Power cable, and used a 5V 2A PSU, do you think that's suitable to use with the GX4000, C4CPC and Imperium Solo all at the same time?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 19:35, 02 March 20
I was using a 9V supply with the standard SCART to SCART connection and the C4CPC. I'm interested in getting one of Duke's Imperium Solo adapters, but he tells me I need to power via 5V.


If I got a Retro Computer Shack PLUS RGB DIN to SCART and Power cable, and used a 5V 2A PSU, do you think that's suitable to use with the GX4000, C4CPC and Imperium Solo all at the same time?
5V 2A is way more than needed (550mA max for a GX4000+C4CPC, and the IS sould be in a couple of 10mA). 
So there should not be any problem !
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: siccoyote on 19:56, 02 March 20
I do with they'd labeled the two power sockets on the back, cheap Alan, I've stuck sellotape over the the other hole.
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: strykr on 01:47, 12 April 20
Hi all,


So is there a definitive decent quality replacement for the RS one thats been discontinued?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: tjohnson on 11:40, 12 April 20
They look like they are still available?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: strykr on 02:18, 13 April 20
Sorry for being a bit crap tj? But can someone link me to the correct one on rs or farnell?
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: gerald on 10:54, 13 April 20
Sorry for being a bit crap tj? But can someone link me to the correct one on rs or farnell?
Farnell one with UK plug :
https://uk.farnell.com/xp-power/vel12us090-uk-ja/adaptateur-ac-dc-9v-1-28a/dp/2524423
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: strykr on 14:05, 13 April 20
Thats great, thanks guys  :)
Title: Re: [PLEASE READ] GX4000 with original power brick and C4CPC
Post by: kingtreelo on 21:44, 26 May 20
Before i purchase a new PSU, this is the one that landed with my GX4000, is this suitable to use with the C4CPC or should i just buy the one that Gerald listed
(https://i.ibb.co/Pcf02kn/20200526-193442.jpg)