Quoted from Rob_G:I believe I found the issue: The power connector for the under-playfield RGB driver board was starting to cook. I have some trifurcon pins, but I don't know if I have the right connector housing...
Rob
Yes, this is the cause of the issue. I had the same problem a year or so ago. Williams/Bally GI burn redux. It would have just completely gone black pretty soon and stayed that way.
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