(Topic ID: 67237)

77 Bally Eight Ball - Right sling won't fire, coil works.

By rockotaco1

10 years ago



Topic Stats

  • 4 posts
  • 3 Pinsiders participating
  • Latest reply 10 years ago by rockotaco1
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#1 10 years ago

I've done a lot of different things to try to get this to work, but I just cant pinpoint it.

Leafs/contacts on the right side work properly, they make noise and register points but they don't activate the sling. I disconnected the left sling wires and connected them to the right sling and it fires no problem so I know it's not the coil. I'm kind of stuck as to what could be wrong.

Anyone know what "J" number on the back box that it connects to? Thanks for any help.

#2 10 years ago

Follow the wire color back to the driver board or just look in the manual. It is probably on the 15 pin connector that goes horizontally across the bottom of the board.

#3 10 years ago

Try this first. Ground the tab of transistor Q9 on the solenoid driver board, left sling should fire. Then try it on Q10, that's the right one. If it fires, the wiring is good and the transistor is likely bad. if it does not fire, you have a wiring issue.

#4 10 years ago

Thanks guys. I'll try it tonight.

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