Still looking at why machine goes into ball search whenever ball is shot into centre trough (Snack bar) , left through (Taillight Park) or right through (Playground).

Common demoninator seems to be column 5 (green/black wire) (J206 pin 5) .
Open the backbox to find nothing plugged into J206 (WTF ?? ) or J208 on CPU board , and no sign of connectors not plugged in but it looks like there are hacks in the wiring of this game