(Topic ID: 125624)

TZ - Switch Matrix Issue (FIXED!)


By swedishc

4 years ago



Topic Stats

  • 8 posts
  • 3 Pinsiders participating
  • Latest reply 4 years ago by ChrisHibler
  • Topic is favorited by 1 Pinsider

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#4 4 years ago

So what's the issue with 84 center lock?

Are all other switches working as they should?

Are you saying when you interrupt opto 73, opto 74 also activates? If that's the case and you're getting phantom switch closures with the optos, you've likely got a bad LM339 chip on the opto board under the playfield.

#5 4 years ago

never mind......started to post and had a situation pop up before I could send.....didn't see your report back before posting. Good call Chris.

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