(Topic ID: 242990)

Coil fires in self test but not when playing


By pinkid

9 days ago



Topic Stats

  • 7 posts
  • 4 Pinsiders participating
  • Latest reply 9 days ago by pinkid
  • No one calls this topic a favorite

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#1 9 days ago

My Bally Mata Hari top right bumper coil fires in test mode, but when playing, it's dead. Other activated bumpers will make it fire, but erratically. The coil looks good as does the switch. I reseated all connectors on the SDB and MPU. Any ideas? Thanks......

#2 9 days ago

I would reseat all the chips on the mpu board.

#3 9 days ago

take a good look at the switch for adjustment and wire connections kinda sounds like it needs a small tweek if random fires are happening. does it fire if activated by hand? does the switch show in test mode?

#4 9 days ago

It will not fire when manually activated via the skirt. Fairly new MPU and SDB. Alltek and Rottendog.

#5 9 days ago

Check and see if a diode came detached on the slings leaf switch.

I had this problem on a Tron once.

#6 9 days ago

Seems like the bumper closest to it makes it fire. The others don't. I'll look it over again. I cleaned the contacts on the switch to no avail. Strange.

#7 9 days ago

Found the problem. Loose diode on the switch. Re-soldered it place and it works as it should. At first glance, I didn't notice it. When I touched it, it popped loose. Phew! Thanks guys!!

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