Konami X-Men Graphics Problem

2huwman

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I turned on my 4 player X-Men cab for the first time in a few months, and of course a new issue presented itself! All the sprites have 4 or 5 vertical lines surrounding them, and follow them around as the sprites move. Everything else works fine.

Thanks for any suggestions.

PXL_20240913_160433510 - Copy.jpg
 

2huwman

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Yes you were both right - mask rom error:

PXL_20240916_144349594.jpg

1H is soldered to the PCB - do I basically need to replace it with a new chip or can it be reprogrammed?
 

Ace`

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Replace it with a 27C800 eprom that's programmed with the data from mame. Cut the old maskrom out and desolder each pin one at a time so there's no risk of pcb damage, at least that's how I do it.
 
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