Game boots up fine and worked earlier today. I shut it off to change some bulbs and now it won't start.
It shows credits. Aftermarket MPU is set to freeplay. Start switch has continuity across leafs when pressed and all the way to MPU connector. Connector is seated. I looked at the tilt switches and they are not closed. It launches a ball into the shooter lane when you fire up the game but doesn't start the game. When I put the ball back in the trough it automatically cycles them to the right.
I don't see a stuck switch anywhere.
I tried going thru the tests and hit reset on the MPU.
I am out of ideas.

Not too sure. I haven't had the game working too long. I don't think so as if I launch the ball, it hits a bunch of switches on the way down to the trough.
I just got all the lamps to work. Next up was the sound card but the game won't start so I want to fix that first.

Maybe but I don't have it. I only have the parts manual, which makes troubleshooting difficult. I have some schematics for other games but even though some things are similar to other games, GP changed one circuit board with every game.

Thanks. I keep forgetting to order that book. It is on order now.

It works now. I can only guess one of the switches was closed. I went and checked them all, and they all seemed open, but when I was done, the game started up. Sound works too so it is now fully functional. Yay!

Good idea. I was too busy playing it. I will check tonight.

It will start if switches are closed. The issue is the balls in the trough need to be in the correct position. One all the way to the left, and one all the way to the right so both switches are closed at the same time. I thought they both had to be to the right.