I have a gottlieb system 80 pink panther pinball game that hasn’t worked since the early nineties. I just got the boards checked out and it finally started up. When the game starts the left pop bumper energizes and releases. When I put it in test mode the bumper immediately locks on. The ohms tested fine but I found the diode had broke loose. I soldered the diode but the coil keeps up the same issue. The transistor on the pop bumper board reads. I just bought the new gulf pinball ones .7 on both ends. I’m new to all this and trying my best any help would be appreciated.