(Topic ID: 157884)

F-14 flippers always on

By southofi-10

7 years ago



Topic Stats

  • 3 posts
  • 3 Pinsiders participating
  • Latest reply 7 years ago by GRUMPY
  • Topic is favorited by 1 Pinsider

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#1 7 years ago

Are the flippes on Williams f-14 suppose to be on all the time?All the coils like kicker and pop bumper are always on when game is turned on.I can't see in the schematic where there is a control.

#2 7 years ago

They are not. There's a relay on the MPU board that controls the flippers. The relay is either stuck on, or the driver/pre-driver transistor that controls it has failed and locked it on.

#3 7 years ago
Quoted from southofi-10:

I can't see in the schematic where there is a control.

U10 pin 19 is the enable signal start. U50 and U 56 is where your problem is most likely at. You should have a logic probe to test it.

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