(Topic ID: 188054)

Twilight Zone flipper up?

By fireonfireoff

6 years ago



Topic Stats

  • 3 posts
  • 3 Pinsiders participating
  • Latest reply 6 years ago by Phatchit
  • No one calls this topic a favorite

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#1 6 years ago

Ok I have a twilight zone pinball that has a left flipper problem. When the game is turned on and coin door is open the clock runs and game starts fine. When the coin door is closed the left flipper in gauges strait up. When you open it it goes back down. If left like this it blowes the f902 fuse. This game has a rotten dog board FLP 892. If the fuse is pulled out the left upper flipper will ingage and work like it's supposed to. I was looking at the rotten dog board and Q3 on the board is slightly a different color. Almost copper. Like it's gotten hot. I have checked the coils. They read about 4.6 and 4.3. I checked the diodes for continuity and one diode is open and one is closed? Both sides left and right read the same. I'm leaning towards an issue on the rotten dog fliptronic board or the power driver board. I don't think it's the optos on the flipper button board. And I'm getting readings from the coils. Any ideas or something that stands out? The switch test came up with 64, 67, 76, 84,85. I have all those locations and will have to check them. Any help would be cool. Thanks

#2 6 years ago

It would be easy to go into Tests - Switch edge and see if all four optos on the flipper button opto boards work ( two each side ) if they do, then sounds like the transistor is the problem.

Check the wiring on the coil and two diodes too.

LTG : )

#3 6 years ago

Sounds to me like a blown transistor , I would check it with a meter

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