Gottlieb Genesis Fixing for a friend, he has installed new mother board and power supply board and done some ground mods. When I first got machine it allowed me to play 11 or 12 games shutting down during 3 of them. The more it's played the faster it shuts down to the point you can't get through 1 ball. I'm an EM guy looking for any direction or help where to look next.

You suggest repinning connectors? Or would you replace harnesses if available.

Thank you. Sounds like good place to start. I ll try that tomorrow and see where that gets me. Appreciate the help.

UPDATE found broken diode on coil, another coil had been replaced w coil w no diode (should have had 1) and a bridge rectifier w loose bad solder. Game is now working except the Genesis figure that should be revealed when u earn it is always revealed I get the light show and change of music. I'm sure the cannister? Should be covering it then rotate open to reveal. I can't get past memory in test mode (is this because of new board?) Not sure how to get that final part working.