Here's the problem: game launches a ball when coin door button is pressed. All GI and feature lights come on, Tilt light goes out and score reels reset to zero. But, nothing else works: no solenoids, switches, bells, score reels. Zilch. Replaced all fuses even though they all tested good, fuse clips tight. All tilts open or closed per schematic.

I'm hoping that this is caused by just one switch somewhere that is out of adjustment, but I can't find where. All coils and switches have the proper voltage. Any thoughts?

Thanks,

Alan

Thanks for the replies guys. Unfortunately checking all those switches did not help. They have been cleaned and adjusted, and I also C&Ad the Hold, Tilt and some other related relay. All the switches seemed to be adjusted properly anyway.

The problem does seem to be in the Ball Count Unit but it is mechanical, not electrical. The game advances to ball #1 but not past that. The plunger that goes into the Ball Add coil does not return all the way and prevents the mechanism from advancing the ball count. I have replaced the coil sleeve and cleaned the plunger, did the same on the reset coil. Could the return spring just be worn out?

All suggestions welcomed.

OK, now that vacation is over, here's the latest.

I have the jones plug set for a 3-ball game. The game ignores that and wants to play five balls. The ball count unit is resetting properly to the zero position and advances to ball 1 when the ball rolls over the right hand ball trough switch. It continues to advance properly from 2 to 3, 3 to 4, and 4 to 5. But sometimes it sticks on ball 5 for a couple of balls before advancing to the 6th position (game over position).

At the 6th position, a match (replay) light comes on but the game over lamp never lights. Good bulb.

The three switches on the back of the ball count unit are set as follows. Zero position: left switch closed, middle and right switches open. 1 through 5 positions: all 3 closed. 6th position: left open, middle and right closed.

The plunger on the advance coil of the ball count unit goes all the way in and out at positions zero through four. At 5th position, the plunger does not retract all the way. When the plunger is pulled manually out of the coil, the stepper advances to 6th position, but the game over lamp still does not light.

Basically my three problems are: no 3-ball game, no game over lamp, and lack of advancement to the 6th position. Frankly, I'd like to try and fix the first two before I have to tear the ball count unit apart and clean it . It does seem like it's gummed up.

Thanks for your help guys.

Alan

Made some progress.

I noticed that the sleeve on the Ball Add solenoid on the Ball Count unit was very long, 5/16" longer than normal. Replaced it with a shorter metal sleeve and the unit advances better.

The Game Over light did not come on because the bulb was loose in it's socket.

Now the game, set for 3 balls works fine, sometimes. It plays 3 balls and goes to game over about half the time.

But sometimes it plays 4 balls and goes to game over. Other times it plays 5 balls but does not precede to game over. It just sits on "ball in play 5" but with switches and coils off. The three switches on the back of the Ball Count unit appear to be set correctly.

I am so close. Cold there be an issue with one of the under playfield relays?

Thanks for the help guys.

There is no wear on the clock gear teeth. All rivets are shiny.

I watched when the third ball drain, and the Add Ball coil on the ball count unit energized with three short strokes without moving the clock gear, then one full stroke which moved the unit to the five position, shut off the coils and switches, but did not move the unit to the sixth position. But if I just so much as touch the coil plunger it energizes and it jumps right to sixth position.

Why would that coil make three short strokes then one full stroke?

Thanks for the pic, TimMe. The wires on the two wipers connect.

I looked at the two switch stacks on the "O" relay, cleaned them all and tightened two of the switches up.

Then I played 10 games. Games 1, 3, 5 and 9 played 3 balls and went to game over. Fine.

Games 2, 5 and 10 went from ball 3 to ball 5 but all switches and coils died.

Games 6 and 8 went to ball 4 then ball 5 and then ended. Fine for a 5-ball game.

Game 7 went to ball 4 and then ended.

As it is an intermittent issue, my guess is that there is a switch somewhere that looks like it is open but isn't, or vice versa. But I don't want to go adjusting a whole bunch of switches hoping I'll hit the right one, sort of an EM shotgun method. Because that's going to make it worse.

While we're here, my game will only take 9 credits. Will it take more? Also, how do you set this monster for free play?

Alan

Adjusted the left hand switch on the back lf the ball count unit, which is the 6th position switch (I think), and now it is tight at the 5th position. I noticed that at the zero position, the far right switch (blue-white and orange-white or yellow wires) is wide open as it should be along with the middle switch (zero position?). But the right hand switch even when open shows connection on my meter. Is this correct? What is that switch and where does it go? I can't find it on the schematic.

The game is still doing the same thing: on half the games it plays 3 balls and goes to game over. Or it will serve 4 or 5 balls and go to game over or just quit.

By George, I got it!!!

After cleaning and adjusting a million switches over and over, I decided to check something else.

The sort of oval shaped outer disc shown in post #17 has three screws that can be loosened to adjust that disc. I found that the two rivets highlighted at the bottom of that pic were not hitting the contacts squarely. I loosened those screws, adjusted the disc and that did the trick!

Many thanks to all above who helped, I really appreciate it.

The machine will be at the York show.