I notice/think that's a Data East pinball machine. Did you have to do any restoring of it? I think the dot matrix displays are one of the things that broke on 'em. I've been trying to get hold of the Hook one (a la peter pan) from 1992.
Can't find any that aren't broken/need work doing on them that don't cost a fortune, and can't find a reliable source for spares (since maybe there aren't any")
However, if you know of somewhere that has/can get spare bits for those machines I'd love to know.
Keep up the good work (and invite me over for a BBQ)