I just picked up a very nice bally fireball that isnt currently working. When I go to start a game it goes from game over to ball one but it gets stuck trying to reset itself. All score reels go to zero but the player 1 and player 2 reset coils continue to fire and the score motor never stops spinning. I do have the schematics but ill admit they mean very little to me. Where do I begin to look on this one?