I would greatly appreciate some help here. I recently sold my Williams Skylab to a friend locally and an old problem has risen again that went away temporarily. I thought it had something to do with a grounding wire that I found had come loose which remedied another major problem I had. The guy has had the game for 2 weeks and hadn't had any issues until now. It used to do this to me sometimes. You would turn the machine on underneath, hit the button in the front to start it up and nothing would happen. You would then hit the left flipper button and the machine will light up but nothing else would happen other than the TILT sign would be lit up. So confusing. Anyone who knows what might be happening if you could please share your knowledge that would be most appreciated.