The DMD on my AFM stopped working, the first thing I found was the ground was insufficient from low voltages. Added braid wire between the backbox ground and the game ground strap that goes down into the game. Fuses were all checked.
After I verified correct voltages, the next step was to test the parts one by one. The DMD checked in another game, all ribbon cables were swapped, audio video board, and the power driver board. I was running out of components to test. Lastly, I swapped CPUs and that was it. So changed the roms and the game is up and running.
I checked on pinside and couldn't find anything on what could cause a fault MPU to prevent any DMD image even with correct voltages. I'm probably going to be send it the board in for repair, but any ideas on what specifically it could be why it isn't sending an image?
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