I have a bally black pyramid that was playing fine. All the sudden now when you start the machine it plays fine for 4 or 5 games then it will start scoring non stop. You can shut the game off turn it back on and it stills scores non stop. If you shut it off for a period of time it will play fine for a couple of games than start the same thing all over again. I am assuming it is something heating up in the mpu board but not sure. Any ideas or solutions anyone, Thanks Bill