Have a bad DMD driver board for a Williams IJ. Power supply on it works fine, but there is a logic problem with it that I haven't see before. Truth be told the only logic problems I have fixed on these boards is just the RAM and I already replaced it so that's not it.
Definitely not the ribbon cables as I already tried another working board in the game with good results.
So it shows a blurry image that is repeated 2 1/2 times across the width of the screen. The height looks like is it too short but it doesn't look like the image is repeated vertically.
Anybody seen this before? Usually I would just toss out a completely dead DMD driver as they are pretty cheap, but this one is clean with low mileage on the power supply and the screen is showing something. I believe this one went bad while being hotplugged into the game (cables connected/disconnected with the game on.
I was hoping it was going to be the RAM, but it wasn't.