I am trying to resolve a problem with a Tommy I just purchased. When the game is turned on, the DMD has a few lines on it and the playfield lights turn on and there is a humming sound. Then the playfield lights turn off. The game will not turn on when I press the start button. When I unplug the DMD, I get an initial sound (for about one second), which I understand is the sound on start-up and there is no humming sound anymore. But again it won't start. The previous owner installed a new PinX power board but that did not solve the problem. I checked the fuses and they seem to be fine.
I noticed that on the old powerboard, CN1 had burnt pins 10-12. I checked the connection to the new PinX power board and the connector had burning marks on the same pins 10-12. So I'm not sure if this may be the problem or if something is causing these pins to burn out.
Any help would be greatly appreciated. See below photos.