Every WPC flipper coil carries two diodes on its lugs
Unlike other WPC coils, flipper coils keep their diodes on the coil itself, two per coil. On Fliptronics games lug 1 often has a red base wire; the red wire is the supply, yellow the power stroke and orange the hold on the pictured coil. Check the diodes are fitted the same way round as originally.
Systems
Related tips
- Testing the diodes on a flipper coil
- Resets from damaged flipper coil diodes
- WPC flipper coils from weakest to strongest
- Mount the flipper coil with its lugs away from the coil stop
- Flipper coil strength order (WPC flipper coil strengths file)
- Flipper coils have two windings
- How a two-winding flipper coil works
- How the two windings of a flipper coil work
Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part Two, Clay Harrell (pinrepair.com)