The flipper is weak.
Weak flipper on an electronic flipper game
Cause: Worn mechanism (plunger, coil sleeve, link) or loose bolts; rarely an open diode in the flipper power bridge rectifier, which weakens both flippers.
Checks
- Inspect the plunger, sleeve and link for wear and check all bolts.
- If both flippers are weak, check the flipper supply bridge rectifier.
Fix
- Replace worn parts and tighten loose hardware.
- Replace the bridge rectifier if a diode in it is open.
Systems
Related tips
- Why flippers get weak and how rebuilding helps
- Fliptronics and WPC-95: weak flipper
- How Fliptronics flippers work
- Flippers and magnet weak after rebuilds: replace the Fliptronics board
- How Fliptronic flipper drive works
- Flipper coils have two windings
- Fliptronic flipper test points
- Flipper voltage readings
Source: Pinball Machines: How They Work & Troubleshooting, Norbert Snicer