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undamned

Multi Baez
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Multi Boyz
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While sorting out the last of the faulty CPS2 on my shelf, I got to an SSFIIX A+B set with multiple graphic/behavioral issues.

My first move was to check the main program EPROMs. While removing those, I noticed one EPROM had a pin broken off. Repaired that, but still multiple issues.

Besides the graphic corruption, I noticed that layer priority had an intermittent issue, sometimes lending to funny scenarios:

zrQQRWUl.jpg


After inspecting the rest of the B board, I didn't notice any physical damage that might cause intermittent signal, so I looked at the pins on the A board and found an issue:

Mzvz6vZl.jpg


I cleaned the corrosion from the pin and the layer priority issue was resolved.

But I still had graphics corruption on some sprites. I grabbed another SSFIIX board and began by swapping the top daughter board. No change. I checked first graphics mask ROM (13). BINGO:

w4BaYR8l.jpg


I burned a 27C160 to replace the bad 2Mbit mask ROM and sprite corruption resolved.
-ud
 
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