Can you get a photo of this compared to the "all dots on" display test using a normal Williams controller?
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Can you get a photo of this compared to the "all dots on" display test using a normal Williams controller?
You said all voltages checked out, otherwise I would have mentioned potential issues with voltages. Obviously your high voltages are way out of spec and can possibly damage/destroy your DMD. This is not the first time Rottendog display driver boards have exhibited this issue. It was also somewhat common for a while on Data East games.
Jim should be able to help you. It's a design flaw or incorrect components. He will usually swap out the bad components with the correct ones and return the board for you.
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