UMK3 Static Problems

I saw the video the other night, it looks to me like a vaunted RAM issue.

which RAM? I don't know. they're fickle, and generally never pop up in the CPU board test as being faulty. lol

I'm battling this on 3 Y-unit boards right now... I wouldn't even THINK of bringing a soldering iron to an MK3 board.
 
nah, it was line artifacting. kinda like in your old vids, that one bad MK3 board you had. lol
 
Remove your pcb and check to make sure none of the socket feet on the solder side of the board are bent over and touching each other. If those are good, remove the roms including the revision roms, and clean the feet with a pencil eraser. See what that does.
 
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