(Topic ID: 286684)

TZ proximity switch problem

By shock_me

3 years ago



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  • 2 posts
  • 1 Pinsider participating
  • Latest reply 3 years ago by shock_me
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#1 3 years ago

My proximity switch 57 stopped sensing steel pinballs. All solder pads reflowed, U1 and U2 chips replaced. On power up the LED lights very dimly and stays that way. I took the switch off the subway and plugged it into the trough proximity switch harness and the problem followed it. I assume this rules out the CPU board?

#2 3 years ago

Something else I just noticed is the U1 chip gets very hot!

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