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(Topic ID: 269011)

Guns n' Roses - all coils just died, fuses seem fine?


By Rob-R

5 months ago



Topic Stats

  • 11 posts
  • 5 Pinsiders participating
  • Latest reply 4 months ago by ChrisHibler
  • No one calls this topic a favorite

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#1 5 months ago

Hey folks - I'm stuck and would love any help you might have to offer.

My Guns N' Roses pin was working fine when I noticed one of the piano keys had broken. I swapped it out with my last available replacement and put the playfield back in the machine. Turned it on: everything seems fine, but it won't play.

Specifically, it doesn't try and eject the ball. I checked the trough and the balls for a while, mainly because the ball launcher was firing so I assumed it was just the ejector. However, when I went into diagnostics two things became apparent: nothing happens when "flashers" cycle*, and nothing happens when "cycling coils". I tried going coil by coil, and nothing. Using the flippers to go through the menus, the right flipper seems to work, but the left flipper barely moves.

I've visually inspected all the fuses, especially F5, and none look burned out. I'm not sure what I could have done with the simple operation I performed, but I'm stumped and devastated that I've temporarily killed my machine.

Thanks in advance.

*I'm assuming flashers are the large lamps behind the translight. All lights come on fine with the exception of the large lamps - those never come on through any diagnostics.

#2 5 months ago

Fuse clip.
DE fuse clips are very brittle.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#3 5 months ago
Quoted from ChrisHibler:

Fuse clip.
DE fuse clips are very brittle.

FWIW, I did a continuity test across all fuses and found F7 on the "A" board to be bad. Replaced it; no luck.

How do I find a bad fuse clip?

#4 5 months ago
Quoted from Rob-R:

FWIW, I did a continuity test across all fuses and found F7 on the "A" board to be bad. Replaced it; no luck.

How do I find a bad fuse clip?

You replaced the fuse or the fuse clip ?

#5 5 months ago
Quoted from SUPERBEE:

You replaced the fuse or the fuse clip ?

The fuse itself. I haven't done anything with fuse clips. While possible that lifting up the playfield shook something like a fuse clip loose, I'm worried that maybe a cable was pinched or a solder joint broke. I haven't found anything like that visually, though.

#6 5 months ago

Carefully remove the fuse. Reinstall it. If it snaps into place the holder is fine. If not, fuse clip can be pinched together temporarily but needs to be replaced for reliability.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#7 5 months ago

Check the white buttons inside the coin door. I have actually pushed it in by accident and same thing happened.

#8 5 months ago

The high voltage interlock switch that turns off the coils when you open the coin door may be the culprit.

#9 5 months ago

Thanks for the suggestions. All the fuses seem tight to pull out / put in, so I think the holders are good. The coin door was another good suggestion. Unfortunately it does appropriately say the high-voltage playfield is disabled when I open the door, so I think the switch is working. I had hoped that might be it. Still stuck.

1 week later
#10 4 months ago

To close this out: I replaced all fuses that were involved with coils or flashers just in case, but nothing different. When I was working on the machine, one of the balls fell out and before I put it back in I started the machine and noticed a few more coils were working than I realized - mainly the kickouts. For fun I started a game and used the ball in my hand to put it in the kickouts and indeed they all seemed full strength. After doing it a few times... Everything started working again. I have no idea what was wrong.

Any ideas?

#11 4 months ago

Crappy connection at the solenoid power fuse clip would be my suspect.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact ... for board repairs
http://www.PinWiki.com - The Place to go for Pinball Repair Info

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