(Topic ID: 167361)

77 Gottlieb jungle princess quits abruptly during play

By DirtinLa

3 years ago

Topic Stats

  • 26 posts
  • 6 Pinsiders participating
  • Latest reply 3 years ago by DirtinLa
  • Topic is favorited by 1 Pinsider


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#2 3 years ago

Try cleaning and adjusting the switches on the game over relay. You'll want to tighten down the switch stack screws before adjusting the switches, and also check to be sure no wires have gotten detached at the solder lugs of the switches.

- TimMe

#9 3 years ago

Did you check the switches on the tilt-hold relay, too? Other than the switches on the game over relay and the tilt-hold relay, there isn't much in the normal circuit control path that can kill the PF power, yet leave the rest of the game working - lights on, no tilt, etc.

Are the PF switches still scoring points when the flippers and pop bumpers go dead? If so, I would start checking the coil black return wire that is daisy-chained to all the coils under the PF. It may be that you have a bad solder joint or broken wire at one of the coils early in the daisy-chain of this wiring. That would knock out power to all the PF coils downstream from the fault, but leave everything else in the game working. Be sure to check the relay coils on the underside of the PF as well as the solenoid coils.

Similarly, if the coil black return wire connection on the jones plug between the PF and bottom board is failing, you will get this same symptom. So you might want to carefully examine the jones plug sockets for the PF and see if you've got a broken wire or fractured socket clip.

- TimMe

#12 3 years ago

Regarding post #10, that's a lamp (6 VAC) power supply wire. It probably broke off of the solder lug attached to the frame of the bonus stepper unit. If so, that wire supplies power to the bonus ladder lights through the frame-grounded wiper on the bonus stepper.

In any event, having a lamp wire loose would not cause the game to stop working in the middle of a game.

- TimMe

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