(Topic ID: 17072)

Pop bumper fires with flipper activity

By Pinwiz1985

11 years ago


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  • 228 posts
  • 39 Pinsiders participating
  • Latest reply 6 years ago by CNKay
  • Topic is favorited by 57 Pinsiders

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Post #84 Potential simple solution to random coils firing. Posted by MrBally (10 years ago)

Post #155 Checklist to address random coils firing in Classic Bally Machines. Posted by BJM-Maxx (9 years ago)


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#89 10 years ago
Quoted from MrBally:

Actually, I'm not joking. Learned it at the Bally Service School in 1979. The ball and the track oxidize which causes quite a bit of electrical noise on the switch matrix.
Witinessed the problem dozens of times on machines that were over three years old on the route I worked for. It really worked for phantom flipper and thumper bumper activations.

This would make sense on why most Early SS bally's i've run into had the tilt ball removed.

1 week later
#95 9 years ago

so you think the flippers are causing the pops to fire? You going to post pictures of the solution if it works?

#97 9 years ago

the pics didn't pop up before when I posted that. They are there now. BTW, that's the cleanest cabinet for that era of game i've ever seen.

#106 9 years ago
Quoted from vid1900:

At the same time there are literally 10,000s of Embryons, SI, and other same design Bally games that don't have the problem.

maybe it's just how they happened to bundle the wires up? If certain wires happened to be sandwich with the wrong other wires, you get problems? So it might have been just random dumb luck if you had the problem or not.

#109 9 years ago

maybe when they were newer it wasn't an issue. Maybe the plastic is breaking down on the insulation now to the point, where you now get interference?

Since they say the plastic in a car seat gets to brittle after 3 years your forced to buy a new one, why wouldn't plastic on 25 year old wires?

#112 9 years ago

i'm sure it is. And with the piss poor grouping of the wires done on this era of game, i could see it being an issue. Espeically if they were using boarderline passable wiring to begin with.

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