I have a 1976 Gottlieb Volley that I have thoroughly cleaned and checked all the switches and relays. All the factory wiring is intact. I have the schematic and attempted to solve the problems with the game before I resorted to making this post. Most EM issues I can solve but two things that are happening in this game have got me stumped.
1) The tens reel operates correctly when 10 points are scored (there are 9 ten points switches on the playfield), either from the switches or by actuating the ten point relay by hand. All the reels will reset to zero, except the tens...the coil is stuck on after it makes one pull. But I know the 0-9 switches are set correctly and the reel works correctly once the reel is at zero, so the contact (EOS switch) that shuts off the coil is working. Some switch or path that allows the other 3 reels to reset is obviously not working for the tens reel. Of course when the ten is locked (energized) the score motor keeps turning. If I power on & off the game, then the coil releases and the reel increments each step with each power cycle until zero and then it stops energizing the coil. What is probably causing the tens coil not to go to zero when all the other coils do? I have cleaned and checked the operation of the switches for the zero, 1-8 position, and 9 and they are all correct, so it must be a signal from another source that is dropping out before the ten resets to zero? The AX relay gaps and switches are all clean and it appears to function correctly. If all the other reels (except tens) are at numbers besides zero they all reset to zero when the game is started.

2) Any time 100 points is scored the hundreds reel works correctly, but the ball count unit advances, so after 500 more points the game is over because each 100 points advances the ball count unit one step. I have studied the schematic until I'm dizzy and I cannot understand how the 100 points relay is moving the ball count unit. Volley seems a bit different from most wedgeheads that I have worked on because it has 2 switches on the trough instead of the usual 1 switch that advances the ball count unit. As I read from the schematic the extra trough switch is to accommodate the differences between the game set on 5 or 3 ball play, but I cannot see how the 100 relay is causing current to go to the ball count solenoid. This problem of 100 points advancing the ball count occurs in either 3 or 5 ball setting, based on the connector under the playfield. To add to this situation, when the trough switches close the 100 point relay is activated and the 100 reel advances one step. So this issue with the 100 points and the ball count unit is a two-way street.

If anyone has encountered similar issues and knows where the faults are I sure would appreciate your help and knowledge. The sticking 10s coil is probably common to any 70s Gottlieb, but the 100 points causing the ball count to move may be something unique to Volley? All the score motor switches are clean, gapped and open-close as they should. I especially made sure the 1A switches are good. I can take and attach photos as required.
Thank you.

Will

Wow, you guys are quick, let me get to work on studying your info and checking stuff on the game....I just watched the NASA channel.. Woo hoo, Perseverance is safely on Mars.

Thanks for your help. Let me start checking and get back.

One thing I can say is the 00-90 unit is working correctly...I have got a lot of experience rebuilding those crazy units and this one works correctly including the on-off switch in the middle of the unit.

I've taken my laptop into the room with the Volley so I can read your help and reply back from what I find on the game. Cell phone screen too small for my old eyes.

The N relay does not lock on when the tens coil is stuck energized. The AX relay is activated(locked) because the tens has not reached zero, and thus the motor is turning. If I release the AX unit then the tens coil releases and the motor stops. All the switches on the AX are clean and properly gaped and close or open correctly.

I'm rechecking all the wires and connections. I've heard and seen problems with shorts so I always use a magnifying lens to look closely for stray wires and the switch ends touching. I'll check again.
Thanks

Guys, I am checking an anomaly in three leaf switches in the tens unit. I am taking that stack apart because it looks like two of the leaves are touching that should not be touching. Examined it with my magnifying lens and I'm sure that it is not put together quite right.....
I'll get back.

The two bottom leaf switches in the 10s unit were in the same slot in the plastic "ladder" that moves them, but the switches were open and closed when they were supposed to, but I took the switch apart and split the two leaves apart so they are each in a separate slot, but unfortunately that did not cure any of the issues. As a test I have unplugged the 00-90 unit to see if it was somehow the problem, but that made no change.
I have gone round around in the game checking all the wires and switches and I'm sure there are no shorts are points in the wrong position (open when supposed to be closed or the opposite). I though maybe the switches on motor 2B might be an issue so I cleaned and checked them again.
I also checked the three switches on the back of the ball count unit and they are doing what they should and no wires are shorted there.

Odd thing about Volley: there is no plug to enable or disable the match feature. First Gottlieb I've seen that is missing that plug/option.
Also my game has no coin chutes or mechs. Game is set on free play via the replay unit 0 position being shorted...what I do on all my games.

Thanks guys. I'm going to have a look at these items and get back. Is there a way to get notifications when responses are added to forum posts?
Also I'll take and upload a photo of the tens unit switch stack.

Photos of TENS reel switch stack. Reading switches from top to bottom (as oriented in my photos) 0 zero position open, open, closed. 1-8 position open, closed open. 9th position closed, closed, open

Kinda hard to take good closeups but the pictures should show the switches are in the correct positions as the reel turns. When you hover on images the caption appears and shows which position the reel is in. Picts 1 & 2 are in 1-8 position, 3rd pict is 9 score reel position, 4th pict is zero position1 -8 switch positions (resized).png .switches in 1-8 reel position (resized).pngReel in 9th position (resized).pngSwitch stack in zero position (resized).png

Great suggestions....there sure is a lot of solder globbed on the switch tabs on the AX, but in my game none of the tabs were touching and the U shaped connector is OK, no shorts or stray wire there. I put paper between the runout reel switches and paper between the green-red wire switch on the AX and the reel will not move when the game is started (the reel coil is not energized) , so the score motor continues to run. If I manually unlatch the AX then the score motor stops.

The gaps in the two trough switches are good. When the ball rolls over the wire it closes both switches, but there is no way the chimes solenoids could close those switches, plus there is no chime when the ball is rolling from the kickout to the shooter lane. But interesting suggestion. Thanks.

The game did not function when I got it, other than light up. The owner had received it as a gift from a friends wife after the friend had died. I think the game had been sitting for many years, who knows when it last worked, but it had decent rubber rings and was pretty clean. Since I got it I took everything off the playfield, cleaned it all, good coat of wax and put it back together. Also went round and round looking at, cleaning, adjusting all the switches and relays. Mysteriously twice the game has not actuated the 100s reel from the trough switches and the 100s has not caused the ball played unit to move and I have been able to test all the playfield switches, including the 15 drop targets and the switches all work and the reels all moved correctly...but then at end of that game the tens would not complete the zero reset and the good old trough switches again were causing the 100s to move. As soon as you score 500 points the game is over because each 100 points moves the balls played unit one step.

I have attached two photos of the 3-5 ball adjustment plug.
Thanks for your help.

3-5 ball adjustment plugged in 5 ball position (resized).png

3-5 ball adjustment unplugged (resized).png

Thanks. I have carefully examined my AX relay and all the switches are good, nothing bent, and the wires are good, no shorting between any of the wires or switch tabs. On start up the relay functions and causes all the reels to reset, except for the Tens that locks up after making one step toward zero. If I put the tens in the zero position then the game will fully start, so is sure seems the AX is working correctly.

Good night guys, tomorrow is another day. Thanks for the help. The power has not gone out where I live, so I don't have to set fire to the game to keep warm, ha ha.

Yes it is closing. There are two sets of contacts for the zero position and both are closed. I tested it with my meter for continuity and it is good. In the 1 through 9 positions when the switch is open there is no continuity.

Guys, I so appreciate your help. I just discovered that when the playfield is down the 100 point/ball advance unit problem happens, but with it up for testing it is not happening and the scoring and ball advance work correctly. I'm now looking for what is different between up and down playfield. The trough switches don't appear to be affected and I have the chimes disconnected while testing, so that system is out of the mix.

I'm investigating what changes must be happening in the playfield.

Also, I know when all the targets are down and the ball leaves the playfield the targets are supposed to reset, but mine do not unless I activate the Q target reset relay by hand. What relay is supposed to tell the target reset relay to activate when all the targets are down?

I'll report back when I find what is happening under the playfield between up and down position

Yes, 500 move the score reel and advances the ball play unit. But now I'm researching why this does not happen at the moment when the playfield is raised, but it was happening with the playfield raised,, which is how I been testing to see what is causing the 100/ball advance problem.

CLEAN MACHINE. Wow. I had cleaned and adjusted the gaps in the all targets down switches but I will check them again.

Gravity at work some place...searching. I disconnected the trough switches from the game and they do not change position whether playfield is up or down, but sure enough something is changing between up and down. The target bank relays is firmly held in place with its two wing nuts so it does not move when the game is up or down. Also the A B C D relays are in position and do not appear to move and are not touching anything and the bundle of wires that go to the relays are not affected by playfield position, but obviously something is changing.

Good suggestion. All three of the switch stacks that use the S or L position forks are in the correct positions and the state of the switches: NO, NC. BB are correct. Actually now the game does play correctly with the playfield up, though the tens still won't reset to zero. I searching for what is changing with the playfield up or down.....gravity or something touching? Looking looking.
Thanks

I found one of the "all down" switches on the yellow targets was not making good contact. I fixed that and now when all targets are down then they all reset. Woo hoo, one problem fixed. Thank you.

I'll try that. The wire bundles from the playfield to the motor board and to the back box, and the cables that go from the motor board to the backbox are quite stiffly cabled together, so they don't move very much at all but I will look more closely at all of them. I did an experiment with just raising the playfield about three inches above the lockbar latch frame and the 100/ball count problem quits, but as soon as the playfield is level the problem starts. I did lay a towel between thed playfield and the latch bar and that had no effect. There is definitely no electric short between the playfield and cabinet as the only parts that contact the playfield and cabinet are wood. There is no playfield to cabinet grounding circuit in this game and fortunately no line voltage running to the coin door.

I'm checking the connection cables now.
Thanks