I have a couple of Williams pinball machines that I have had for years. Recently the Pinbot died which I believe was do to battery damage years ago before I bought that machine. The damage was excessive but I was fortunate enough to find a replacement board (no battery damage) from a Pinbot that had been parted out. It had a couple problems that I am trying to work through. I hope that some of the other users on this forum may be able to help answer a few questions.
I work on a lot of the early personal robots from the 80's so I already have a lot of the parts I may need as well as test equipment for working on the boards.
Robert