1. Is coin door closed when you are testing the motor and checking voltages? If not, power is cut. Not sure how you are testing the motor, but go into settings, coil test, choose 21, push start button. Nothing?
Coin door is open but you can pull out the white switch that actuates when the coin door is closed to enable high voltage mode and still keep the door open. 20v/50V. So no issues there.
2. Do you get continuity from the board connector for the motor to the connectors at the motor?
When you said board connector you mean the 2 prong connector in which the motor connector plugs into?
3. It's possible the transistor on the board has blown, check that with a meter. Meter on diode check, one probe on tab of transistor, other probe on game ground. If you get no resistance or a buzz, it's blown.
What transistor are you referring to? I am not sure of the location
4. To be honest, I don't know what that glass tube dies, the blue varistor I think helps regulate power, but I'm not entirely sure.
5. Pull connector at the board, measure voltage coming off the pin controlling the motor.
Which connector is that?
6. If motor works in test mode, but not game mode, I'd suspect the home switch.
It doesn't work in with. The motor is acutally pulling 16V according to Page Y30 in the Manual. Its not the switch.