My flippers on the upper playfield don't work during normal gameplay. Seems like I have a randomly activating switch on the lower pf. Once the game detects a hit on any of the switches in the lower playfield it will shut down the flippers on the upper pf. I put the game into switch test and I don't get any other random switches firing in test, but does anyone know what shots makes Popeye let out a low groan like "ohh". I have heard that sound bite and seen small amounts of point being rewarded at weird times, normally when just hitting the flippers. That might be firing and shutting off the upper playfield. The upper playfield works perfectly during multiball when all flippers are enabled, so it has to be a lower playfield switch firing, but I can't figure out which one. Anyone else experienced this or maybe know where to look?