I have a NBA fastbreak where the backbox ball/coil fires only when the pass 3 coil fires.
I orginally had a smoked coil on the pass 2 coil . I replaced the coil and put in a new transistor.
Now the backbox coil only fire's when the pass 3 coil fires.
The backbox ball/coil used to work before I removed the board to replace the transistor.
I think I plugged everything back in correctly but I guess could have missed something.