This is most likely going to be the slowest repair/restore ever for a couple of reasons.
1) I work full time, game and have other hobbies so I don't have lots of time for it.
2) I know absolutely nothing about pinball machines. It took me quite awhile to figure out how to get the thing opened - who knew there was a secret bar inside the locked door in front? so I am sorry to report it won't be a fancy pro-style restore back to mint condition.
3 years ago I got the bug and found a non-working unit at a nearby business. They told me "we used to keep it for customers and then one day it stopped working so we just left it." It sounded like it might have something easy like a blown fuse and would be a great first experience so I bought it off them.
When I plugged it in and turned it on, nothing happened, no lights, no sounds, nothing.... seemed like a fuse!
However when I eventually got the coin door open and then the back board glass, although I had never looked inside a pinball machine, I was pretty sure the original unit was missing a board:I posted the question and it was confirmed. No repair possible on this thing, I had to purchase a replacement.
Checking the fuses showed they all were in good shape. Must be something else!
My power board was in pretty bad shape:and after reading Vids bulletproofing guide I opted to try and repair the board. I purchased a soldering iron and solder and sucker and went to work. It is significantly harder to desolder connectors than it sounds from reading the posts. My attempts destroyed the board:
Back to the store and I had to purchase a replacement board. But at least I knew the power had to be good!