I have a gottlieb Neptune that's making me pull my hair out. When I got it home it played fine, but now it won't start a game. Here's what I know.
The game was set on "free play " by removing the start button and making it so that by pushing the coin reject it simulates dropping a quarter in.
Upon dropping a quarter everything resets the ball count unit coil pulses over and over and it never kicks out a ball. As soon as the hold relay on ax is tripped all pulsing stops.
I have the schematics, but I'm definitely not the strongest at reading electro mechanical schematics.