After new flipper button switches made the flippers snappier, just pressing the left flipper before launching advances the bonus or lights Same Player Shoots Again, and scoring runs high as the ball bounces around. Switch test shows nothing stuck.

Pressing a flipper adds bonus or lights extra ball: star rollover switch gap too close

Cause: The star rollover switch (which lights the extra ball) was gapped so close that vibration from the flippers and bumpers closed it.

Checks

• Note which feature the false hits award, then find the switch that normally scores it.
• With the glass off and a game started, rap on the playfield near suspect switches to see which one triggers.
• Remember the switch test only shows a switch that is fully closed at that moment.

Fix

• Re-gap the star rollover switch so it only closes when the ball rolls over it.

Systems

• Bally MPU AS-2518-17

Games

• Playboy

Related tips

• Switches register with the wrong numbers

Source: Pinball Repair help group!! (Facebook group)