I have a Popeye board set with strange video glitches. I have a known good board set, and was able to isolate the problem to the bad set's video board. I swapped every single socketed video board chip from my good video board one by one into the bad board, and it did not fix the issue, so the video roms are good. It's got to be another chip on the board going bad.
Test mode indicates all ram ok and all roms ok.
Below are some pics of the issue. There is a lot of flickering on the screen, and as the game plays, chunks of the screen turn blocky yellow or green. Any ideas which chips I should look at further?
Test mode indicates all ram ok and all roms ok.
Below are some pics of the issue. There is a lot of flickering on the screen, and as the game plays, chunks of the screen turn blocky yellow or green. Any ideas which chips I should look at further?

