Post by Psilovybin on Aug 24, 2020 3:02:02 GMT
I was gifted this C128 and I checked the PSU initially and everything seemed fine. but I just checked it again and the 5vdc is 4.5vdc now so i may have to get a PSU.
Anyways, it will boot to C128 mode and appears to be fine. Video signal is fine, i have a bit of a hum in the audio as i'm running composite into a CVBS to HDMI adapter.
but upon powering it up and holding down the C= key, i get a black screen with a tiny white line down the left side of the monitor..
resetting will go back into C128 mode.
Ram chips are not hot, checked the ram voltages and all are 4.5vdc which is probably too low but C128 mode works fine. I suspect it may be a bad u32 kernel rom and i've reseated every chip i can on the board.
Anything else I should check out? I have a diag cart coming in the mail and should be here sometime this week, the one from diychris.com
I don't see many troubleshooting and repair videos on the C128 so if any of you would be so kind as to produce some, that would be nice..
I may go into details on how to correct this once I get settled back in with the C128 once again, it's been since 1987 since i've touched one.
I don't see many troubleshooting and repair videos on the C128 so if any of you would be so kind as to produce some, that would be nice..
I may go into details on how to correct this once I get settled back in with the C128 once again, it's been since 1987 since i've touched one.Thanks in advance!
