I recently had my Target Alpha not going to game over. My problem was unique in that the switch on motor 1C that provides power to the game over coil had lost it's power. More than likely a bad solder connection somewhere on the score motor...but where..? Since the power goes from the BX to the game over coil, a jumper was soldered on the BX from a switch with power to the switch that goes to the game over coil. Kind of an end around fix, but it's been working great.
Thanks. I have been driving myself nuts working on a Williams Grand Prix that doesn't end the game correctly. As you say, I have replaced the coil on the game-over relay, but I guess I have to go back and inspect the switches on that relay more carefully. I think I did already. The machine is at my daughter's house in another city, so I only get to check it out every once and a while.
I recently had my Target Alpha not going to game over. My problem was unique in that the switch on motor 1C that provides power to the game over coil had lost it's power. More than likely a bad solder connection somewhere on the score motor...but where..? Since the power goes from the BX to the game over coil, a jumper was soldered on the BX from a switch with power to the switch that goes to the game over coil. Kind of an end around fix, but it's been working great.
Thanks. I have been driving myself nuts working on a Williams Grand Prix that doesn't end the game correctly. As you say, I have replaced the coil on the game-over relay, but I guess I have to go back and inspect the switches on that relay more carefully. I think I did already. The machine is at my daughter's house in another city, so I only get to check it out every once and a while.
Might be something like this if it seems like the relay tries to close but never "latches". I run into this from time to time.