(Topic ID: 273608)

Bally supersonic some coils not engaging

By Blackice

3 years ago



Topic Stats

  • 7 posts
  • 2 Pinsiders participating
  • Latest reply 3 years ago by Blackice
  • No one calls this topic a favorite

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#1 3 years ago

My Bally supersonic outhole knocker and saucer coils not engaging, I have swapped working solonoid and mpu boards, same issue, I tested the wire on transistor and the coils engage. Any help please. Thanks

#2 3 years ago

Go into solenoid test and see if any solenoids repeat fire through the full sequence (look at # on display.... any duplicate solenoid with different #)

If so, this means your connection between the mpu and solenoid driver board input is missing a line and likely needs to be repinned.

#3 3 years ago

Hi, yes drop targets at no2 and 8 repeating,

#4 3 years ago

Which connectors should I repin? Thanks

#5 3 years ago

J4 on mpu
J4 on solenoid driver board

resolder or replace the header pins if they look tarnished.

#6 3 years ago

Ok will do and report back.

#7 3 years ago

Re pinned j4 on mpu board all solenoids work now, thank you so much Slochar.

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