(Topic ID: 204787)

Bally flipper issue - fluttering


By pinlink

1 year ago



Topic Stats

  • 9 posts
  • 6 Pinsiders participating
  • Latest reply 1 year ago by pinlink
  • Topic is favorited by 2 Pinsiders

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    #1 1 year ago

    All 3 of my flippers on fathom are doing this. When you lightly press on the flipper when it's being held up, the flipper flutters. This makes it impossible to catch the ball when playing because when the ball hits the extended flipper it bounces like a trampoline sometimes all the way up the playfield. Really annoying.

    I've adjusted the EOS switches over and over but no luck. Also the EOS switches at the flipper buttons in the cab. Any reason all flippers would be doing this?

    #2 1 year ago
    Quoted from pinlink:

    All 3 of my flippers on fathom are doing this. The video shows that when you lightly press on the flipper when it's being held up, the flipper flutters. This makes it impossible to catch the ball when playing because when the ball hits the extended flipper it bounces like a trampoline sometimes all the way up the playfield. Really annoying.
    I've adjusted the EOS switches over and over but no luck. Also the EOS switches at the flipper buttons in the cab. Any reason all flippers would be doing this?
    » YouTube video

    Got a picture of the gap on the EOS switches just to confirm?

    #3 1 year ago

    Try cleaning all those contacts really well as well as ajusting.

    #4 1 year ago
    Quoted from zacaj:

    Got a picture of the gap on the EOS switches just to confirm?

    Sure I can get one soon. I thought this was an EOS issue so I did clean and adjust the EOS switches many times with no change to this particular issue though. Weird that it's happening with all flippers no?

    Does this definitely still sound like an EOS issue?

    #5 1 year ago
    Quoted from pinlink:

    Sure I can get one soon. I thought this was an EOS issue so I did clean and adjust the EOS switches many times with no change to this particular issue though. Weird that it's happening with all flippers no?
    Does this definitely still sound like an EOS issue?

    That's usually what it is but as you say it is weird that it's on all flippers. I just want to make double sure the EOS look right before getting weirder. Coils haven't been replaced recently or anything, I assume?

    #6 1 year ago

    In my experience with my Bally pins, that used to be a problem with the coil stop or the flipper core.

    If the core is shorter than normal because of years of use, or the coil stop is damaged and or shortened, the flipper core goes too far from the correct position and looses power.

    Many people tends to think about EOS or voltages, but many many times on my Ballys the problem was the mechanical part.

    In some cases you only need to replace the coil stop or the flipper core to fix the problem.

    #7 1 year ago

    I was having a similar (not exact) issue with my Fathom. Ball would hit up flipper and it would go down and then back up. I searched for the answer and a few people said coil stops. I didn't believe them, but I tried anyway. It was the coils stops.

    #8 1 year ago

    Flipper fluttering or chattering is usually caused by a bad holding coil. The flipper coil consists of a low and high restance coil in series. The EOS switch normally shorts out the high resistance coil until the flipper flips then opens putting the high resistance coil into the circuit. If the HR coil is bad the flipper will chatter. Try resoldering the coil wires or replacing the flipper coil.

    #9 1 year ago

    Update: It was the coil stops! they were worn down, after replacing them the flippers are perfect. No more bounce back at all. Thanks everyone!

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