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#1
Besides the things explained make sure your bench power supply really delivers the 5V at 1A.
Or test with another 5V supply if you have one.
I had exactly the same symptoms and it finally turned out that the bench power supply was malfunctioning and could no longer deliver 5V at 1A.
It showed 5V and it showed the 0.9A - but there was only 4V I could measure. I tried a lot until I tried a different PSU and voila - 5V again.
Or test with another 5V supply if you have one.
I had exactly the same symptoms and it finally turned out that the bench power supply was malfunctioning and could no longer deliver 5V at 1A.
It showed 5V and it showed the 0.9A - but there was only 4V I could measure. I tried a lot until I tried a different PSU and voila - 5V again.
#2
Quote from: Xyphoe on Today at 20:10I'd like to request (whenever / if possible) -Hi @Xyphoe , nice to see you here. Look above, AMC has been patched some weeks ago
A.M.C. Astro Marine Corps
(although it's split into 2 parts, so I guess that's why it hasn't been done yet and makes it awkward - but it's one of my and many others fav Amstrad games)
Simulador Profesional De Tenis
(I came across this recently, and honestly I think it's the best tennis game on the Amstrad. Would time in nicely with Wimbledon on at present!)
Jax The Dog
(Recent homebrew game, my little boy likes playing this game)
Thanks!
#3
I'd like to request (whenever / if possible) -
A.M.C. Astro Marine Corps
(although it's split into 2 parts, so I guess that's why it hasn't been done yet and makes it awkward - but it's one of my and many others fav Amstrad games)
Simulador Profesional De Tenis
(I came across this recently, and honestly I think it's the best tennis game on the Amstrad. Would time in nicely with Wimbledon on at present!)
Jax The Dog
(Recent homebrew game, my little boy likes playing this game)
Thanks!
A.M.C. Astro Marine Corps
(although it's split into 2 parts, so I guess that's why it hasn't been done yet and makes it awkward - but it's one of my and many others fav Amstrad games)
Simulador Profesional De Tenis
(I came across this recently, and honestly I think it's the best tennis game on the Amstrad. Would time in nicely with Wimbledon on at present!)
Jax The Dog
(Recent homebrew game, my little boy likes playing this game)
Thanks!
#4
H
Technical support - Hardware related / Re: CPC 464 doesn’t boot, show...
Last post by hatman72 - Today at 19:56Quote from: Bryce on Today at 19:42Hi Hatman72,Thanks Bryce. I've had both socketed chips (GA and CPU) out. I know the CPU is ok but my other (working) Amstrad has a 40010 GA so I can't easily test that.
that's not a classic RAM failure. I'd suggest you start by cleaning the pins and reseating all socketed chips and see if it helps.
What's your level of electronics knowledge and do you own any test equipment?
Bryce.
I own a multimeter and a cheap oscilloscope (which allowed me to check there's activity on all the RAM chips, but I'd consider my electronics knowledge to be fairly basic.
#5
Hi deadmeat,
I'd suggest you give the power socket and power switch a good clean. The voltage drop is probably happening in one of those.
Bryce.
I'd suggest you give the power socket and power switch a good clean. The voltage drop is probably happening in one of those.
Bryce.
#6
Technical support - Hardware related / Re: CPC 464 doesn’t boot, show...
Last post by Bryce - Today at 19:42Hi Hatman72,
that's not a classic RAM failure. I'd suggest you start by cleaning the pins and reseating all socketed chips and see if it helps.
What's your level of electronics knowledge and do you own any test equipment?
Bryce.
that's not a classic RAM failure. I'd suggest you start by cleaning the pins and reseating all socketed chips and see if it helps.
What's your level of electronics knowledge and do you own any test equipment?
Bryce.
#7
H
Technical support - Hardware related / CPC 464 doesn’t boot, shows bl...
Last post by hatman72 - Today at 19:33Hi everyone, I'm hoping that someone can suggest what might be wrong with this early 464 with a 40007 Gate Array.
When I start it always ends up at this screen with alternating blocks of 128 characters in light blue and purple. There is no beep if I press delete. There seems to be lots of activity on the board and no chips seem to be getting excessively warm. The problem is that since only the CPU and GA are socketed I don't want to start desoldering chips at random as I do not have a desoldering gun.
The computer came to me this way and has been stored in a loft. I have no idea whether it was working when it was put there.
When I start it always ends up at this screen with alternating blocks of 128 characters in light blue and purple. There is no beep if I press delete. There seems to be lots of activity on the board and no chips seem to be getting excessively warm. The problem is that since only the CPU and GA are socketed I don't want to start desoldering chips at random as I do not have a desoldering gun.
The computer came to me this way and has been stored in a loft. I have no idea whether it was working when it was put there.
#8
General Discussion - Introductions / Re: New 3" disks? Floating an ...
Last post by ZorrO - Today at 17:27Let's be serious, a floppy disk weighs almost nothing and doesn't spin hundreds or thousands of times per second. It doesn't need balancing.
#9
Quote from: XeNoMoRPH on Yesterday at 01:08Memory bug is fixed, on the last DSK versión.I wonder who did this fix
.Thumbs up for Jörn!
@XeNoMoRPH Works like a charm now.
Out of couriosity, which mode do you prefer?
Stefan
#10
the lower voltage on the board is normal.. usually not quite that low..
but if its working..there is no problem!
there is a diag rom you can replace the onboard rom with.. but.. if ya seeing the basic screen.. its working fine!...so the diag isnt going to tell you much...
https://github.com/issalig/amstrad-diagnostics/blob/main/build/AmstradDiagLower.rom is the one you need to replace the onboard rom (you can use the upper rom version if you have a romboard,m4 etc)
but if its working..there is no problem!
there is a diag rom you can replace the onboard rom with.. but.. if ya seeing the basic screen.. its working fine!...so the diag isnt going to tell you much...
https://github.com/issalig/amstrad-diagnostics/blob/main/build/AmstradDiagLower.rom is the one you need to replace the onboard rom (you can use the upper rom version if you have a romboard,m4 etc)