When a game is started, two of the score reels keep stepping round and never stop at zero, even though their zero-position switches open and close properly.
Score reels keep spinning at game reset: stuck scoring switches on the playfield
Cause: Some playfield scoring switches were stuck closed, continually sending score pulses to those reels.
Checks
- Check the reel zero switches first; if they work, look for any playfield scoring switch held closed (bent blade, debris, misadjusted rollover).
- Check the score motor reset pulse switches and connectors if the playfield switches are fine.
Fix
- Free and re-gap the stuck playfield switches.
Systems
Games
Related tips
- Hundreds reel keeps stepping after reset: a stuck playfield scoring switch
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- Score relay stuck on, reel does not score
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Source: Pinball Repair help group!! (Facebook group)