Yes it is very likely one of the customs. Isolate it to the A board or the B+C set. If you have another working c board with same custom (can be a world warrior C board, with kick connector and ic. on top), then you can further isolate it to the C board if the issue is coming from.the b+c set. Check the C board for nicked traces or gouges.CPS 1 graphics error custom chip?
hello have a cps 1 with a graphic error is the problem a custom chip?
Start with probing cps-a-01. If you've got lines not doing anything that should be functional, or obviously misbehaving lines, then start with replacement of cps-a-01. Probing pal's can also give insight into a faulty cps-a-01. Again, lines with no signal that should have signal or lines that are making very abnormal sounds not consistent with normal activity.Hey, i highjack this one;
Tested 5x CPS 1 A boards with issues
3x have similar problems than the one pictured here
1x has the text only around 70% to high
1x has flickering sprites
Aside from this all run fine with full sound.
My B+C used for testing are 100% fine.
Where to start and what parts to switch? ^__^
That's true, however you can take a CPS-A custom from a CPS2 (don't need to be another CPS1).Unfortunately, replacement of cps-a-01 is only possible by taking one from another board.
CPS2 custom chip seems stonger, like the last CPS1 short pcb with 12mhz qwatrz and 12 for 2 last digit on M68k model.That's true, however you can take a CPS-A custom from a CPS2 (don't need to be another CPS1).
Maybe its just because CPS2 is newer... But they seem to have a lesser failure rate?
The original long board CPS1's were the worst in my experience... Again I'm not sure if that is because they are also the oldest?