Ms Pac-man garbled screen

PrairieDillo

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Donor 2011, 2024
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Can someone tell by just looking at this screen at which chips could have gone bad?
Do these have a diagnostics screen?
 

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back again - this is a different board.

any thoughts about this one? Ms Pac-man stuck on the top corner spinning with nothing else on screen. Just wondering if anyone has seen this one. Nothing like this on Mike's Arcade.
 

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thanks, those are some great troubleshooting pages.
 
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