The playfields are often bad down below the flippers. I don't think they had their paint bonding figured out back then.

My advice is... fix it and sell it. Not that fun to play. Should be able to move it on Ebay or CL if all is working. I sold mine a few years ago on Ebay but and had no interest on Pinside.

Look for bad connectors where the acid leaked. I have replaced both plugs and wire harness sockets on DE pins that were caught in the battery acid bath.

Replacement boards are not that hard to find.

Good luck.

Replace the small electrolytic capacitors on the power supply. Check for bad solder joints and burnt connectors on that board too.

It's not the greatest pin ever but it's still plenty of fun. 3-ball multiball is tough enough to get and then there's the jackpot on top of that, plus you're always trying to shoot that ramp for the title of loop-back champ. If you're a fan of the early seasons of the Simpsons, this is the one to get; I know I'm gonna take sh_t for this but TSPP just has too much going on and looks way too busy. Mirrored backglass beats TSPP translite hands down. Data East tinny sound sucks though. Be prepared for plenty of airballs as the flippers are crazy powerful.