Hi community. I have been working this problem out for a while. Even had a repairman over who currently has my schematics trying to figure this out. My Gottlieb Fun Land is getting occasionally stuck on scoring. The ten bell is stuck on and the scoring does not move. While playing if I hit a spinner. It goes back to normal operation. If I unplug the jones plug in the back box the buzzing also stops. I believe it is coming from the playfield. Anyone have any ideas of what the culprit could be? Some things I or others have done already:
1. cleaned score reals
2. adjusted and cleaned switches in the back box
3. cleaned and adjusted spinner plates.
Any Fun Land owners or anyone with Fun Land Schematics have any idea where the problem could be?