Convert older series flipper coils to parallel when replacing
When a series coil on a pre-F-14 game needs replacing, fit the matching parallel coil (FL11630 for FL23/600-30/2600, FL11722 for FL24/600-30/2600). The wiring changes slightly but EOS life improves; the EOS capacitor is optional, and flippers can be converted one at a time.
Systems
Related tips
- Series and parallel wound flipper coils on System 11
- Replace a series wound flipper coil with the parallel FL11630 type
- Series FL23/600-30/2600 vs parallel FL11630 flipper coils
- Fitting a parallel FL11630 or FL11722 flipper coil
- Series FL23/600-30/2600 flipper coil wiring
- Flipper coils have two windings
- How the two windings of a flipper coil work
- Testing flipper coil diodes
Source: Repairing Williams System 11 Pinball 1986 to 1990, Part Three, Clay Harrell