Hi, I was going through some tests last night on a Mars God of War. I was at #16 test, that tests for the lamps. There were a couple lamps tested, and then it got to the coil that puts the ball in play. It just kept on the coil and never moved on to anything else, it just kept pulsing it.One time it actually locked it and I had to turn off the machine. Does anyone have any idea why this would happen? Any help will be appreciated.