(Topic ID: 235734)

F-14 Pop Bumper Help!

By Gorgar666

5 years ago



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  • 6 posts
  • 2 Pinsiders participating
  • Latest reply 5 years ago by wayout440
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#1 5 years ago

Was recently trying to adjust my pop bumper for more sensitivity and I believe I accidentally close the connection and blew the fuse, added new fuse, then pop doesn’t work. But does in test mode ... I quickly saw something like u- something failure but haven’t seen it again since .

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#2 5 years ago
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#3 5 years ago
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#4 5 years ago

If your pop works in test mode, then the following is GOOD:
Coil drive logic
Coil drive transistors
Coil itself

The reason it is not working in game play is the special solenoid switch circuit composed of the following: Spoon switch, wiring from the spoon switch to CPU, or multiplexing logic on the CPU board. To determine if playfield or CPU problem, briefly short 1J18-4 to ground. If the pop fires, CPU circuit is good and the problem is wiring/spoon switch.

#5 5 years ago

Yes it was a bad adjustedspoon...thanks so much for your help

#6 5 years ago
Quoted from Gorgar666:

Yes it was a bad adjustedspoon...thanks so much for your help

Your welcone! Glad it was an easy fix. Nothing worse than pulling a board to do board work and finding out it was a playfield problem all the long. Play on!

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