(Topic ID: 269272)

Whitewater 7 Optos Not Working


By pinballscranton

12 days ago



Topic Stats

  • 2 posts
  • 2 Pinsiders participating
  • Latest reply 12 days ago by daveyvandy
  • No one calls this topic a favorite

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#1 12 days ago

Hey gang,

I picked up a White Water recently that had the 7 Optos not working. I’ve replaced some Optos which were poorly soldered and looked suspicious. I replaced the 7 switch Opto board under the playfield with a new one. I replaced the U20 chip on the CPU. I replaced the C2 capacitor on the power driver board and still nothing. We have 12 volts going down to the 7 switch opto board and also 12 volts going out. On the power driver board LED 3 is not consistently lit like all the others. Not sure if it has to be or not. In switch test I cannot get any of the optos to activate.

When I boot the game the eject on the left and back of the game fire as I believe the CPU must think there is a ball there but obviously is not the case.

I really don’t know what else to check. Can you help please? Thank you!!

#2 12 days ago

Got another wpc89 nearby you can swap mpu boards with to see if that makes a difference?

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