Quote Originally Posted by alec006 View Post
Ask for the main problem problems itself, three things most likely to fail in Pong consoles, Pedometers, which are the knobs that control the paddles, the switches, which control game modes, and capacitors. Most likely the contacts on the pedometers and switches are worn to hell so you could either try taking them apart and cleaning the contacts which is easier said than done. You can also try to find a replacement for them all but they very hard to replace since I have no idea where those specific pedometers and switches are sold, maybe someone else here does?
Po-ten-ti-om-e-ter. I doubt the Pong system is trying to keep track of how far it has walked.