The left flipper on my space invaders machine has gone crazy. When I hold down the flipper button the flipper will chatter or do a rapid fire motion and will continue to do this till I let go. Has the coil gone bad or is there something I could do to stop this from happening.

No connections seem to be broken.

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I should add that this machine has been used all day and just now started having a problem.

Alright a new coil fixed the chattering flipper thanks for the help everybody.