(Topic ID: 249934)

Metallica awarding graveyard multiball in error

By dmj1977

2 years ago



Topic Stats

  • 10 posts
  • 6 Pinsiders participating
  • Latest reply 2 years ago by dmj1977
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#1 2 years ago

i have an issue on my metallica premium. During play, with drop targets still in the up position it has started awarding graveyard multiball. I can't identify anything consistent happening just before it. Any ideas? I've tried checking connections. Not sure what else it could be?
thanks for any advice

#2 2 years ago

Check the back opto near the cross.

#3 2 years ago

thanks - makes perfect sense. Looks like i have to take a few pieces off to get in there so will tackle it tomorrow.

#4 2 years ago

I had that exact issue with my new pro. It was the loose cross opto connector unerneath the playfield (on the opto pcb board). It registered hits from vibrations on the playfield.

Couple of videos:
https://drive.google.com/drive/folders/1-46a7aJa5QpNxziCFN9w0Zuiee4dl0Ii?usp=sharing

#5 2 years ago

Start with a switch test before you take things apart.

#6 2 years ago

I recommend going into the switch test and bang around the playfield. You will probably see the opto trigger. Something could be loose or opto going bad. Either way should be easy fix.

#7 2 years ago

I’ve worked on 2 Met that had this issue, aside from new opto set and securing connectors, I needed to actually bend the ball guides inward a bit to make certain the optics were properly aligned, the receiver board needed to be directly in the center of the red circle of light from the emitter to fix the problem 100%.

1 week later
#8 2 years ago

thanks all, got it sorted

#9 2 years ago

Please post the solution.

#10 2 years ago

honestly not 100% sure which step was the one but i
- cleaned the optos
- rechecked all connections
- bent/re-aligned the opto boards

and so far, so good....

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