(Topic ID: 288289)

TZ opto Gremlins

By Scottiiboyii

3 years ago



Topic Stats

  • 8 posts
  • 4 Pinsiders participating
  • Latest reply 3 years ago by Tlamb
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#2 3 years ago

Reseat J116-J118 on the power driver board. This supplies 12v to the optos. Well, technically only one connector does, but they are interchangeable between all 3 board connections. Reseating all in case they are mixed up according how the manual shows them connected.

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#4 3 years ago

If you lose 12v power to a transmitter opto or it fails to be bright enough for the receiver to see the IR beam, the game will think there is a ball there that is blocking the beam and will fire that coil.

Also, the game doesn't detect enough balls in the trough or where they are supposed to be staged, the game thinks there could be a ball stuck there.

Another possibility, is that you may have had either the J206/J207 or J208/J209 switch matrix connector come loose at the bottom of the MPU board. May want to reseat those as well.

If any of that is no help, I suggest doing a switch edge test on all the switches and optos in case you have a whole row or column happened to fail.

I bet is that a cable connection came loose though. Wouldn't hurt to clean that opto pair in the auto launch lane.

1 week later
#6 3 years ago
Quoted from Scottiiboyii:

So seems that the whole 8 column come and goes off

That is definitely more detail. Have you reseated the J206/J207 and J208/J209? Any corrosion on the pins of the wired connectors?

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