Just chiming in late here, without checking the schematics, but with the free play method used, couldn't a mistake have been made regarding which pin the toggle switch is soldered to?

One of the switches on the door is a punch/kick/slam tilt. Solder bridge could also do this... just a thought. You're in very good hands - feel free to ignore me.

EDIT: Now I see in @baldtwit's post above that he references a stuck slam switch. Just another potential source of 'stuck' that isn't obvious.

Misaligned wipers on red score unit would have that effect for the lamp. Wish I still had a screen game to verify, but if there are zero and Max position switches on selection feature unit, check them for proper adjustment and operation.