I'm having a problem with my Metallica. The 1st drop target has stopped registering. Today I pulled the drop target mech out of the game. With it plugged into the game, in test mode, the only way i could get it to register is if i pointed the opto at a light and then activated the drop.
I unscrewed the opto board and while in test mode, the only way the 1st opto registers is if i pass an object so close that it almost touches. The other 2 optos register much farther away.
Before I buy a new opto board I wanted thoughts on if it indeed is the opto board or if theres something else I should try 1st.