Paradise, NV
Try this; Remove the ball from the roll tilt track. That's it. Period. Nothing else to do.
(Topic ID: 17072)
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Embryon
Bally, 1981-
Fireball Classic
Bally, 1985
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Quoted from BJM-Maxx:Mr. Bally is joking, here is an even simpler solution unplug your machine, nothing else to do. All the false firing will stop.
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/sling shot activations.
Quoted from aobrien5:Actually, it did help! That's the only thing I did, and the frequency of phantom pops was reduced significantly. It definitely still happens but I'd say it was at least a 75% reduction.
I also discovered when removing it, that when the ball touched the upper track, the right pop fired every time. Perhaps that's another problem that I have in my wiring, or it's introducing that interference to the other part of the matrix?
One other thing which is also Tilt circuit related; remove the plumb bob Tilt wire and top hanger. Using a wire brush on a grinder or drill motor or Dremel tool make the wire hanger at the top loop and the hanger as clean as the day they were new and replace. This assumes that there is no copper braid (solder wick) attached to the Tilt bob wire form and the hanger itself.
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