(Topic ID: 198740)

Switch Column error #wh20

By Tjohejsan

6 years ago



Topic Stats

  • 4 posts
  • 3 Pinsiders participating
  • Latest reply 6 years ago by Pin_Guy
  • No one calls this topic a favorite

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#1 6 years ago

#White Water
All switches in Column J207-5 is not working.
I have looked for loose cables, and i followed in this case the green/black cable from J207-5 to all switches and i could not find anything wrong with the Wire?
What should i do?

#2 6 years ago

Can you post a picture of the MPU board?

#3 6 years ago
Quoted from PinballManiac40:

Can you post a picture of the MPU board?

Maybe its the u20 (ULN2803) ?
Its on the mpu bostad.

#4 6 years ago

I would try moving the J207 connector to J206 to see if that makes a difference as both connectors are the same electrically. If you have a logic probe, you can easily check to see if your column pulse is present at pin 5 of J206/J207.

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