I finally finished restoring my house so I'm finally looking at some backlogged game repairs I've had sitting for a year.
STTNG was working great. One day around a year ago, the DMD was only showing half of the screen (left half if I remember right) the next day I turned it on and the whole machine was dead.
Fast forward to yesterday I plugged it in, the DMD will not come up at all, the only sound I get is the initial power beep, and I get attract more lights.
I started by testing the voltage on the power driver board, 50v is coming in at 78v, 20v is at 1v, 5v is at 4.9v. If I credit it up and start a game, it appears to start a game based off the lights, occasionally it will kick a ball out into the shooter lane, then all 3 flippers fire and get locked on until I turn it off.
I pulled the DMD driver board out and it is pretty burned up, I swapped in a known working DMD driver board but when I do that, the game won't even get to attract mode, it just turns on GI. I've tried a different MPU and Driver board as well but the problems seem to stay with the cabinet.