(Topic ID: 162764)

Little help... I'm stumped.


By donnPin

2 years ago



Topic Stats

  • 11 posts
  • 7 Pinsiders participating
  • Latest reply 2 years ago by Keetur
  • Topic is favorited by 1 Pinsider

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#1 2 years ago

Recently while playing my Mata Hari (ss) pin, I had an issue with "chattering" on the right flipper (some call it "machine gunning" or "stuttering"). Checked a few things and decided to buy a new coil. After replacing the coil, the chattering is corrected however the flipper is not as strong as before. I have cleaned all the components of the coil and reset the coil itself. Any ideas? Again, its functioning but not as strong.

#2 2 years ago

Could it be a bad coil?

#3 2 years ago

Check the gap on your end of stroke switch.

#4 2 years ago
Quoted from donnPin:

Could it be a bad coil?

Probably not.
Make sure the plunger slides easily into the coil sleeve without binding.
Make sure the EOS switch is filed, cleaned, and adjusted correctly.
Not much else to it.
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#5 2 years ago

Thanks for the response(s). Any quick notes on the "adjustment" of a EOS switch? I compare to the other side and it appears to be the same. Is there a "rule of thumb"?

#6 2 years ago

Check the resistance across the closed contacts of eos switch and cabinet flipper switch .Clean properly adjusted switches should read .03 ohms

#7 2 years ago
Quoted from donnPin:

Could it be a bad coil?

Once you've ruled out everything else, then it could be. Sometimes there can be a break in the wire of the coil.

#8 2 years ago

Just got finished adjusting the EOS switch and cleaned very well. Problem solved. Thanks for all the responses!!! Headed back to the Mata Hari.

#9 2 years ago
Quoted from donnPin:

Thanks for the response(s). Any quick notes on the "adjustment" of a EOS switch? I compare to the other side and it appears to be the same. Is there a "rule of thumb"?

Check out Vid's guide. EOS is a likely culprit.

https://pinside.com/pinball/forum/topic/vids-guide-to-upgradingrebuilding-flippers#post-284680

#10 2 years ago

Oops - spent too long finding that link - well done!

#11 2 years ago

Depending on the condition, consider rebuilding both flippers. Very easy to do, all the houses have "standard" parts, and the return on your time is instantaneous, and very gratifying.

It will be like a brand new machine again.....

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