I have a Jet Spin that I have been working on recently and could use a little advice. The game starts and plays, but the score reels do not activate. However, the score motor does work and turn when I hit targets on the playfield. My first guess is to clean the jones plugs, but it there anything else I should be looking for.

Also, When the playfield activates a chime coil for the first time in a game the coil stays locked on until I start a new game.

I currently do not have a manual, but it is on order.

Any help is appreciated.

Well, here is what I found out. I cleaned the jones plugs and manually advanced some of the score reels off of zero. I started a one player game and the score reels reset to zero, but the score reels are still not scoring during game play.

If I start a one player game and just drain the ball without hitting any targets, it just stays on player one and ejects the ball without advancing the ball count or player.

If I start a one player game and hit a target the chime coil locks on and score reels do not come on. Then when I drain the ball it advances to the next player and ejects the next ball. It then continues to advance through players as the ball is drained.

I was reading the start-up sequence for the coin unit and if players 1 & 4 are lit on the backglass, the coin unit is not stepping up from the zero to one player position. I will check tonight, but I think 1 and 4 are lit on my Jet Spin when I start a game.

I found a couple of problems with the coin unit. One of the problems was that it was binding up at the screw that I circled in the photo. The threads broke off the screw as I was removing it. Do you know where I can find another one?

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