GBS 8200 -> no signal

[SerErris]

Why do you use the RGBtoHDMI if you have a 15khz Monitor? Does it only has HDMI Inputs? (that would be very strange).

[dodogildo]

Why? To get crystal clear perfect picture on this beautiful LCD panel
(It has DVI and VGA ports. I'm connecting via mini-hdmi2dvi cable.)

[SerErris]

Use a cable from analog to VGA. If the screen is 15Khz you do not need anything else and it just should work. The RGB2HDMI is only required so that you can use 

1. Screens that do not support analog RGB input
2. Screens that do not support 15Khz signals.

If you have both, why even bother to use RGB2HDMI. There is simply no need for it.

[dodogildo]

That would be great. I will definitely test it.
EDIT: I found this, seems cool: https://www.ebay.co.uk/itm/265725280192

[SerErris]

Yes, that should work.

[eto]

EDIT: I found this, seems cool: https://www.ebay.co.uk/itm/265725280192

Costs per piece are less than £2, probably 10 minutes of labour per piece. That's a great margin. 

[SerErris]

And much easier to solder than any cable

[eto]

I can't find the 6 pin plug anywhere. I find 8 pin plugs which would fit the Plus, but not the 6 pins ones for the CPC. 

[dodogildo]

And much easier to solder than any cable

Does anyone have any instructions on which pin to solder to which pin? (for RGB to VGA or  to DVI)?

For Scart it's well documented: 

[robcfg]

According to this, it shouldn't even be that difficult:

Pin 13 can be either HSync or Composite Sync (which is what we have on the CPC), so connecting the sync signal to pin 13 should work.

That's what I've found. I don't know if it works, and try it at your own risk. But, looking at the ebay adapter and seeing that it doesn't have anything apparently to split the composite sync into hsync and vsync, I think this is the best bet.

[SerErris]

I can't find the 6 pin plug anywhere. I find 8 pin plugs which would fit the Plus, but not the 6 pins ones for the CPC.

no sure where you live.

here are some on Amazon (enough to learn to solder those).
https://www.amazon.de/RUNCCI-YUN-Verbinder%EF%BC%8CDIN-Kabelanschluss-Lautsprecher-Stecker%EF%BC%88schwarzem/dp/B08SK1L83S/ref=sr_1_3?keywords=din+stecker+6+polig&qid=1701515688&sr=8-3

Ah I see, you live in Germany:

So here we go:
https://www.ebay.de/itm/224597280683?chn=ps&_trkparms=ispr%3D1&amdata=enc%3A1H7Z6Gvg7QPSE4Ygzp1QCNQ54&norover=1&mkevt=1&mkrid=707-134425-41852-0&mkcid=2&mkscid=101&itemid=224597280683&targetid=1716911581919&device=c&mktype=pla&googleloc=9044389&poi=&campaignid=17943303986&mkgroupid=140642150118&rlsatarget=aud-1158329636859:pla-1716911581919&abcId=9301060&merchantid=111240381&gclid=Cj0KCQiAyKurBhD5ARIsALamXaFghzXtFvXW9PZGMY0zxBj6rtmQmP0hEH0Ei6WOIn_bUBD_6tYflBMaArCTEALw_wcB

https://www.ebay.de/itm/224597280683?chn=ps&_trkparms=ispr%3D1&amdata=enc%3A1H7Z6Gvg7QPSE4Ygzp1QCNQ54&norover=1&mkevt=1&mkrid=707-134425-41852-0&mkcid=2&mkscid=101&itemid=224597280683&targetid=1716911581919&device=c&mktype=pla&googleloc=9044389&poi=&campaignid=17943303986&mkgroupid=140642150118&rlsatarget=aud-1158329636859:pla-1716911581919&abcId=9301060&merchantid=111240381&gclid=Cj0KCQiAyKurBhD5ARIsALamXaFghzXtFvXW9PZGMY0zxBj6rtmQmP0hEH0Ei6WOIn_bUBD_6tYflBMaArCTEALw_wcB

https://www.reichelt.de/din-stecker-6-polig-mas-60-p11200.html?PROVID=2788&gclid=Cj0KCQiAyKurBhD5ARIsALamXaESg9A8iQchl7V3jqpRINb6uV5T3XtW-7soVPALK9gJHekWm8oFAkoaAkI3EALw_wcB

https://www.adapterwelt.net/p/din-stecker-diodenstecker-6-polig

[eto]

here are some on Amazon (enough to learn to solder those).

Those are normal plugs to create cables, I have a lo of them here. But those are not the ones you can solder on a PCB. See attached a comparison of a 8 pin connector cable vs. PCB.

[eto]

That's what I've found. I don't know if it works, and try it at your own risk. But, looking at the ebay adapter and seeing that it doesn't have anything apparently to split the composite sync into hsync and vsync, I think this is the best bet.

yes, the PCB will be easy to make. You probably can get >50 PCBs (panelized), maybe even 100 from JLCPCB for about €6 incl. shipping. The VGA connectors are also easy to get. Just the 6pin DIN connector with option to put on a PCB seems not so easy to source. But let's see, if maybe someone finds them...

[eto]

I recently made an adapter for the Atari ST. It's bigger and more complicated with more elements and it's still just a few € in total.

[robcfg]

here are some on Amazon (enough to learn to solder those).

Those are normal plugs to create cables, I have a lo of them here. But those are not the ones you can solder on a PCB. See attached a comparison of a 8 pin connector cable vs. PCB.

Wouldn't they be basically the same but just needing to remove the tension reliever bit?

[eto]

Wouldn't they be basically the same but just needing to remove the tension reliever bit?

Footprint is identical but the metal shield would be missing. At least for stability I would prefer the real PCB version. 

[dodogildo]

Pin 13 can be either HSync or Composite Sync (which is what we have on the CPC), so connecting the sync signal to pin 13 should work.

Yes, it seems on CPC there's only 1 syc (composite) and it should most probably go straight to Pin 13 on VGA.
Thank you. I'll try this.

[SerErris]

Ah, now I do understand.

Here is another Schematic:
https://cpcwiki.de/forum/index.php?topic=735.0


What is the name of this pcb solderable version? I cannot even find the 8 pin  (not that it helps).

[eto]

What is the name of this pcb solderable version? I cannot even find the 8 pin  (not that it helps).

Probably not the real name but that's how they are describes on AliExpress:

"DIN Male Plug Header Solder PCB Vertical Circular Push-Pull Power Connector Machined Contacts"
https://de.aliexpress.com/item/1005002071264550.html

It's the only source I found both for the Amstrad Plus connector and the Atari ST connector.