The upper flipper was weaker than the others for a while and then stopped working altogether.
Upper flipper weak, then dead: blown fuse on the Fliptronic board
Cause: One of the flipper fuses on the Fliptronic board in the backbox had blown, although it looked fine to the eye.
Checks
- Pull each fuse on the Fliptronic board and test it with a meter instead of trusting how it looks.
- Swapping the flipper opto boards and reseating the Fliptronic board plugs are other quick checks.
Fix
- Replace the blown fuse with the correct rating and type; if it blows again, check the upper flipper coil and its wiring.
Systems
Games
Related tips
- Upper flipper energises by itself: shifted magnet on a magnetic button board
- Upper flipper sometimes weak, then buttons dead after cleaning: replace the flipper optos
- Games that came with Type 1 flipper opto boards
- Fliptronics and WPC-95: weak flipper
- Fliptronic flipper dead: check the button first
- Weak or dead flippers from failing LM339s on the Fliptronics board
- How Fliptronics flippers work
- Fliptronic flipper dead though the button reads
Source: Pinball Repair help group!! (Facebook group)