(Topic ID: 130882)

RFM trough opto issue

By tmontana

8 years ago



Topic Stats

  • 5 posts
  • 2 Pinsiders participating
  • Latest reply 8 years ago by tmontana
  • No one calls this topic a favorite

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#1 8 years ago

Recently my rfm started ejecting two balls. In the test menu I noticed that trough ball 1 switch wasn't working.
I used my cell phone camera to look at the emitter side of the opto board and noticed the emitter was not glowing blue. I replaced the led emitter and hooked it back up but it still isn't "glowing" under my camera. I thought maybe my soldering job on the led sucked but I check continuity and it buzzed. I also checked continuity from the motherboard to the opto thinking maybe there was a break in the wire but that too buzzed.

Now that's about as far as my limited repair skills can take me. Any ideas on what I should check next?

#2 8 years ago

Do all the Optos plug into a board under the playfield ?
Check that connector.

#3 8 years ago

Connector looks good. I used my dmm to check continuity between the two ends and all looked good.

#4 8 years ago

I guess I'm saying check the male connectors on the board.
Wiggle the connector while it's on the board and see if the opto activates.
The male pins on the opto board may need to be reflowed.

#5 8 years ago

Gotcha I'll check. Thanks

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