When troll mode starts, the left troll does not come up during play, yet its coil (power and hold) and both troll switches work correctly in test mode.
Left troll will not rise in game though it tests fine: factory reset
Cause: Corrupted settings or game data rather than a hardware fault.
Checks
- Confirm the troll coil and up/down switches in test mode.
- Reseat the small driver board for that coil, supporting the main board so it does not flex while you push the connector home.
Fix
- Perform a factory reset from the service menu, then re-enter your settings.
Games
Source: Pinball Repair help group!! (Facebook group)