Quoted from Sinballer:You seem to know your stuff!
Although not working yet, this does give me a good jumping off point to start troubleshooting the problem.
With power on, when I manually activate the game over relay, it latches in that position, the "Game Over" light goes out and ball "5" gets displayed instead.
Additionally, the score for Player 1 advances by 100 points every time I do this and one of the chimes sounds.
The big issue is that there is a loud hum that is audible while the relay remains latched. I can't identify where exactly that's coming from yet because I am releasing the latched relay (manually) quickly out of fear that I'm about to burn up a coil.
Someone mentioned that I can get schematics, etc. from IPDB - What is that exactly? I'm not familiar with this acronym. Can someone please elaborate?
It's called internet pinball data base