The roto wheel spins when other playfield features tell it to, but hitting the targets on the wheel itself scores nothing. Nearby outlanes may also work only some of the time.
Roto wheel targets do not score: check the wheel's ground connection
Cause: The roto wheel assembly was not properly grounded, so its target switches had no complete path. A bad pin in a connector caused another lane switch to fail.
Checks
- Test each roto target switch for continuity when pressed.
- Check the ground wire and contact that feed the rotating switch assembly.
- Check the connector pins for the lane switches that are dead or intermittent.
Fix
- Restore a good ground to the roto wheel assembly and adjust it so it spins freely.
- Repin any loose connector pins found on the dead lane switches.
Games
Source: Pinball Repair help group!! (Facebook group)