My Sound Stage EM game by Chicago Coin has a problem that I can press the credit button & it will light up the 2nd player light & after I play player 1 ball the light does change to player 2 but it keeps scoring on player 1. & also recently it stays on ball 1 unless I press the selenoid in the back of the game to manually advance it. I don't have a wiring diagram just the few papers in the cabinet. The relays & selonods are marked. They look ok but I guess I gotta look at them more & carefully clean them without bending anything. See video of game on my post about outhole not working.

I fixed the player 2 scoring today. The way I figured it out was, if you put a 9v battery at the relay it would operate it. The relay wasn't getting power to close so player 2 score would register. I followed the wire down to the connector that disconnects all the wires to the back box & found that the wire was open at the connector, so I put a jumper wire in & that cured the problem !!! Now the only problem the game has is the A-F target lights are not coming on. I checked out all the connectors today & wiring & bulbs. If I barely touch any target I can get the light to come on & the mini relay goes wild buzzing. I also checked each mini relay with the onboard relay checker & they are all good.