I’m having an issue with the display fuse blowing on my Black Hole. Up until today, everything was fine however every time the game boots and initialized the displays, the fuse blows. I’ve checked the obvious... loose wires, grounds, etc and can’t find anything out of the ordinary. Not sure where to go next...

Found a couple fried resistors and a blown transistor on the power board. Replaced the PS with a brand new Rottendog board and made some progress. Machine powers up and initializes the displays and enters attract mode. When pressing the start button I hear a Solenoid fire and then the displays go out and the game doesn’t play. Any help is appreciated.

Thanks. I’ve checked the coils on both playboards and all diodes are present and connected. I tested all of the diodes as well and noticed the captive ball coil diode is .10v...would that signal that it’s bad?

Also, are all coil diodes the 1N4004’s?