Hoping someone will me with 1977 Sonic (Williams) Butterfly
Coin up, hit the start button and everything resets as it should. All score reels reset to zero.
Ball feeds to shooter lane. Launch the ball, drain it, ball feeds to shooter lane but does not advance to ball two.
I can manually advance the ball count unit and it advances though balls 2-5. Can also ground the coil on the ball count unit and it advances so I know power is getting to the coils.
At one point it worked but the machine was not advancing players so I started cleaning things up a bit and created this new problem.
I went through all of the steppers on this machine and now all of them operate smoothly and snappy.
I don't have a schematic and usually struggle with reading and understanding them. Not sure who would even have a copy. There's not much info out there on this Spanish Sonic Butterfly.
I feel like I am right on the edge of getting this figured out but need some direction from the experts out there.
Thanks in advance for any help.
Mike