After I start a new game on my Little Joe (Bally), alle reels are reset to zero. That's fine. The ball is served, so I can play.
But at that point my 00-90 stepper is producing a heavy humming sound and keeps being active. It is not released.
At the same point the 10-point reel of player #1 is slightly changing its position between 0 an 1.
When I switch off the pinball, the reel jumps to 1 (it seems 1 ten point score is made).
During the active period of the 00-90 stepper, I cannot score 10 points at the playfield.
I've tried manualy but no 10 points can be made, other scores are working.
Any ideas?