Quoted from PerfectFlaw:The problem with this machine is the unknowns. When a machine is kept in such poor shape and clearly never maintained, and just beat up over and over again - you have no idea what other 'gremlins' could be in there. The boards are probably ready to go out, wires might be hacked up just to get working, playfield is completely hammered, makeshift repairs that probably screwed other things up, etc.
On the other hand is could all be purely cosmetic.
That's the romance of pinball