Each flip scores 10 points even though no pop bumper or slingshot fires.
Flipping scores 10 points: a rebound switch squeezed closed by new rubber
Cause: The drop target rebound switch was being closed by the vibration of the flippers; new, tighter rubber rings can squeeze rebound switches nearly shut.
Checks
- Hold the game in switch test and press the flippers to see which switch number appears.
- Check the rebound switch gap with the rubber fitted, and that slingshot and switch mountings are tight.
Fix
- Regap the rebound switch so it stays open at rest with the rubber in place.
Systems
Games
Related tips
- Tilt doesn't work and closing it fires a pop bumper: dirty slam tilt switch
- Switch reads stuck closed, or a pop bumper chatters
- Pop bumper or slingshot fires by itself; random tilts
- Pop bumper and both outkicker switches dead: bare wire touching the coin door
- Pop bumper fires on its own when a flipper is used: replace its switch capacitor
- Several playfield switches drop out together: worn insulation shorting the start button
- Lower playfield center target fires the kickout and ends play: switch wired backwards
- Stand-up target always closed in test and ghosting another: failed switch capacitor
Source: Pinball Repair help group!! (Facebook group)