Museum of the Game® & International Arcade Museum® Forums

So I just got a Batman Forever. The person I got it from feels like the DMD is outgased. I found service bulletin # 106 that states that the DMD likes 5 Volts or darn near close. I measured the harness going into the DMD and it showed 4.84. So I started the wiring exactly how the service bulletin stated. Once done I turned on the machine without it going to the DMD and it measured 5.0 or 5.01. I hooked it up and now the DMD is completely blank and it won't start a game. I measured again with the harness hooked up on the one side I get 5.0 and on the other side I get -0.05. What gives? I will say that someone at some point did some serious hack work and that could be part of the issue. Any help you can provide would be appreciated!!!