Early WPC games use relay-style flippers
Earlier WPC games without the Fliptronic board use the same flipper circuit as System 11: a flipper enable relay and a mechanical end-of-stroke switch. Troubleshoot them with the System 11 flipper steps.
Systems
Related tips
- Test points for relay-style flippers
- How relay-enabled flippers work
- WPC flipper parts reference
- WPC flipper coils from weakest to strongest
- WPC flipper rebuild kits by era
- Pre-Fliptronics games need a driver board with the flipper relay
- WPC flipper coils, weakest to strongest, with resistances
- Every WPC flipper coil carries two diodes on its lugs
Source: Pinball Machines: How They Work & Troubleshooting, Norbert Snicer