Quoted from Silverstreak02:
I'm considering my first bingo machine from Bally. I have a couple EM pinball machines and have found several sources to buy parts and even electrical schematics. Are parts and schematics available for bingo games made in the 50's? What should I stay away from when I look at games?
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Start here: https://bingo.cdyn.com/ You will find one of the best sources for Bally bingo repair, as well as links to free schematics and score cards for most, if not all, Bally bingo games.
As for parts, use your normal EM sources for generic parts like rubber, etc. There are several guys on this forum that have bingo-specific parts that you might need. Just ask, and we'll probably be able to get you what you need.
As for choosing a game, beyond any cosmetic concerns / criteria that you might have, I stay away from any game with water damage. I also look inside the game for any obvious and large hacks (often indicated by wires running from one component to another that are obviously not stock). I also have had little success getting the later 6-card games to operate correctly. If you can, once you find a game, tell us about it and post some photos, and I'm sure you'll get feedback.