Gottlieb Solved Volcano (Gottlieb, 1981) pop bumper problem

PinballDude369

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Jun 27, 2011
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Favorite Pinball Machine
Haunted House
The lower left side playfield pop bumper on my Gottlieb Volcano keeps acting up on me. For a while it will do like it's supposed to and then later on it doesn't do anything when the ball hits it. I've cleaned the contacts underneath it, but the problem keeps coming back. Any idea what is wrong with it? Thanks!

Rob
 
Solution
Intermittent Pop Bumper

Sometimes as the pop bumpers age the plastic rod that pushes the switch starts to become flexible. This makes adjusting the contacts even harder. The softer rod can't move the the switch blades as far as it did when it was new. If your pop bumper fires every time you depress the switch or jumper it... try adjusting the blades for a shorter travel.
Check for loose wires on the switch, coil and in backbox.
 
Intermittent Pop Bumper

Sometimes as the pop bumpers age the plastic rod that pushes the switch starts to become flexible. This makes adjusting the contacts even harder. The softer rod can't move the the switch blades as far as it did when it was new. If your pop bumper fires every time you depress the switch or jumper it... try adjusting the blades for a shorter travel.
 
Solution
Thank you!

Sometimes as the pop bumpers age the plastic rod that pushes the switch starts to become flexible. This makes adjusting the contacts even harder. The softer rod can't move the the switch blades as far as it did when it was new. If your pop bumper fires every time you depress the switch or jumper it... try adjusting the blades for a shorter travel.
I will try this! let's hope that's all that is wrong with it. I'll let you know if this fixes the problem.
 
I think it's fixed!

I tried your suggestion to shorten the travel between the blades of the switch and that seems to have fixed it. Thanks for your suggestion. I'll let you know if this fails later.


Sometimes as the pop bumpers age the plastic rod that pushes the switch starts to become flexible. This makes adjusting the contacts even harder. The softer rod can't move the the switch blades as far as it did when it was new. If your pop bumper fires every time you depress the switch or jumper it... try adjusting the blades for a shorter travel.
 
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