Fitting parallel-wound flipper coils
Parallel-wound coils are designed for 50 V, so they suit only Firepower II and later System 7 games without care. On 28 V games, if you try anyway, match the power side resistance (around 4 ohms) of the original coil; the hold side (around 125 ohms) does not need to match.
Systems
Related tips
- Measure a flipper coil
- Fire a flipper coil by grounding it
- Matching a replacement flipper coil by resistance
- WPC flipper coils, weakest to strongest
- Replacing a flipper coil
- Williams 50 V fat flipper coils ranked by strength
- Power at the flipper coil but no flip
- Flipper coil gets very hot
Source: Repairing Williams System 3 to System 7 Pinball 1977 to 1984, Part Three, Clay Harrell (pinrepair.com)