Hello all. New here. Just purchased a nishijin monroe. Seller said it was working a few years ago and suddenly stopped fireing. Have an 8 on display. And won't fire. If I manually drop balls in looks like everything else works. It drops winnings. Just won't fire and displays on 8 and won't tally just remain an 8.

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When you touch the fire knob you can hear clicking, like a relay but hammer is not moving.
Any information is much appreciated
Thanks