Post by cbmguy on Apr 23, 2015 17:48:45 GMT
I bought a C128Dcr a few years ago and I now have the time to put into it, so I'm back at it. It has a strange problem with colour on the VIC side & it happens for both 64 mode and 128 mode. The colours for the characters are almost always black & grey--alternating between the two. Every once and a while a letter will display in a colour, but not the proper colour. In the images, the V on the C64 and the S in the C128 are coloured... it's wierd. The border and background are perfectly fine. None of the characters are messed up, just the colour. Changing colours only changes from/to black or gray.
I was checking things over a few weeks ago and at one time, for a few days, everything was back to normal. But since then, the weird came back. I've changed the 4066 timer and the colour RAM--no difference. I just recently changed the PLA, no difference. I changed the VIC II and the 8701 and the crystal, no difference. I bought a new power supply, no difference. All new parts are in it, but there is no difference. Am I missing something? Could it be a cap? If so, which one might be the best guess to change? Could it be something in the RF?
This is just the VIC side, everything else works fine--sid, vdc, etc. It's driving me insane and I can't put this puzzle down lol They are so hard to come by now a days that I would very much like to see my dcr back and working well. It's really the only reliable 1571 that I have, too.
I was checking things over a few weeks ago and at one time, for a few days, everything was back to normal. But since then, the weird came back. I've changed the 4066 timer and the colour RAM--no difference. I just recently changed the PLA, no difference. I changed the VIC II and the 8701 and the crystal, no difference. I bought a new power supply, no difference. All new parts are in it, but there is no difference. Am I missing something? Could it be a cap? If so, which one might be the best guess to change? Could it be something in the RF?
This is just the VIC side, everything else works fine--sid, vdc, etc. It's driving me insane and I can't put this puzzle down lol They are so hard to come by now a days that I would very much like to see my dcr back and working well. It's really the only reliable 1571 that I have, too.
