Word of warning - I know nothing about fixing EMs. I do not have the schematics, not that I would know how to read them anyway.

I just had a Gottlieb Jungle fall in my lap here at work. Game will power up into Game Over and Tilt. Game has credits. Pressing the Start button initially does nothing. Manually tripping the reset bank will cause the score motor to turn once. Tilt light goes off, score reels do not reset, still in Game over.

Now, pressing the Start button decreases the credit wheel by one, the score motor turns once and then stops. Still in Game Over. No reset of any scoring reels. I can do this a total of three times and then nothing until I start the entire process over again.

Also, it's missing the chime unit and the lockdown bar if anyone can help with that. I'll probably make a separate WTB post for those.

Any help is appreciated. If it gets too involved, I do know of a good local EM tech that I can hire.

I've cleaned all the contacts on the PU (not any of the switch stacks), cleaned all jones plugs in the backbox and bottom panel, but I still get NOTHING happening with the score reels or any real reset activity.

If I manually trigger the control bank reset relay, the score motor turns and the reset bank relays fire, but no other reset activity. The only relay that seems to fire in the backbox is on the credit unit when I press the start button.

BTW, the player 3 and 4 score reel lights are always ON. If I manually trigger the PU, I can get it to cycle through players 1 and 2, then 3 and 4 which are stuck on, then back to player 1.

Any help is appreciated.

I do have a local EM tech that I will call upon once I've completely given up...

OK, I guess I'll start rebuilding score reels then. I know what to do with those at least and there are 16 of them!

Here's some schematic pictures I found in past posts. I'll get a hard copy at some point...

62438.jpg

62520.jpg

62521.jpg

SB1 does not trip. Here's what happens.

Manually reset the Control Bank with the power off, credits on the game, power the machine on, Game Over relay trips.

Press the replay button. Hold Relay triggers, Replay Button Relay triggers, Start Relay triggers, PB2 (2nd player) Relay triggers, credit wheel decrements, score motor spins once and stops. No scoring wheel movement/reset, Game Over and Tilt lights lit, players 3 and 4 score reel lights are both on, # of players on backglass stays at 4.

I have tightened and cleaned all the switch stacks in the backbox. I can manually select a player on the PU, then trigger the scoring reels manually using the scoring relays. So it seems all the voltages are there.

Pressing the Replay Button two more times will trigger PB3 and PB4 along with the credit unit decrementing each time and the score motor spinning once. Then nothing.

SIGNS OF LIFE!

Following your advice, I located the ZB relay on the reset bank. After figuring out that the entire reset bank will actually flip up to allow servicing (I *told* you I was a newbie), it became obvious how mis-aligned the switches were on the ZB relay. After adjusting the switches properly and cleaning/adjusting all the other switches, I held my breath and powered up the game.

I pressed the replay button and the game came to life, attempting to reset all the score reels. I haven't cleaned all the reels yet so players 3 and 4 are still very sticky. So the score motor continually ran.

I shut the game off and manually reset all of player 3 and 4 score reels to 0. Powered on the machine again, pressed the replay button, and the game happily continued on the reset sequence, resetting both players 2 then 1 to all 0. It seemed to be going along great until the end of the reset sequence when the reset relays fired. The reset bank pulled in then the 25v fuse blew.

Replaced the fuse, powered on the game, pressed the replay button, game went through same sequence. As soon as the reset bank pulled in the 25v fuse blew immediately.

I metered all the coils in the bottom panel and the Tilt Hold "H" relay seems to be shorted. I'm assuming this is probably the culprit? If I disconnect one side of the coil, would that be the best was to verify?

BTW, thanks for the help thus far. I'm actually learning stuff!

I unsoldered the H relay and it tests fine. So it's something else.

Another thing, if I manually trigger the Control Bank Reset Relay, the score motor will spin once then the reset bank relays trigger. The 25v fuse does NOT blow in this instance. It's something else that's happening during the startup sequence.

BTW, I'm doing all this with the playfield disconnected and out of the cabinet.

More info. All of the relays on the reset bank meter at 3.9 ohms except for the ZB and QB coils which meter at 2 ohms.

<Update> - with ZB and QB tripped, they both meter at 3.9 ohms.

Yes.

Final attempt to get this running before I call in a professional! I'm using a circuit breaker instead of a fuse as per Clay so I'm not going through so many fuses.

Still same problem. Playfield is disconnected and removed from cabinet. Power on machine. Press the start button, reset sequence runs, control bank resets, a second or so later the breaker (25v/10A) will blow. I'm noticing the only coils that seem energized before it blows are the "R" Hold relay and the "H" Tilt Hold relay. They both release once the breaker blows.

I've narrowed it down to one of the switches on the QB Game Over relay. If I block a contact on one of the switches, it will reset and not blow the breaker. When I unblock the switch, it sparks when it closes and blows the breaker. I've included a picture showing the contacts that are connected to the problem area. The one side looks to have two different colored wires attached (WHT-YEL and WHT-RED).

jungle_switch.jpg

I guess I need to get a schematic now.

Further info. That WHT-RED wire goes to a 6-position Jones plug in the backbox. If I unplug that, it doesn't blow. When I plug it in (after the reset sequence), it seems like that is being shorted to the position on the plug that has a black wire on it, which I'm assuming is ground.

Looked around for obvious shorts, didn't see any yet. All coils seem to meter properly.

At least I know the short is somewhere in the back box since the playfield is disconnected.

I'll dig deeper tomorrow.

I found the short!

There was a wire coming off the Player 1 tens score reel that was *just* touching the ground lug of the N relay which was just below it. Now everything resets as it should.

I plugged in the playfield and got 90% of that working as well. All switches work and score, pop bumper works and scores, bonus unit advances and lights the appropriate lights, outlane gates open and close properly. The only things left are a slightly weak left flipper (the EOS switch is adjusted/cleaned, might be a bad coil), none of the rollover lights are working, and the pop bumper light does not toggle (it's only off). The A relay is toggling on every 10 point switch but nothing changes on the playfield lighting-wise. Oh, and the trough kickout solenoid never fires.

Appreciate all the help so far. I now have a semi-playable machine. Just need to iron out all the little stuff.

Hopefully this is the final update. Once I had the schematic in hand, I was able to trace down the rollover and pop bumper light issue as well as the ball return coil not firing. Everything came down to switch cleaning and adjustments.

Thanks to a fellow Pinsider for missing parts (lockdown bar, chime unit, knocker assembly) and PBR for lots of new playfield parts, the game is now complete and fully functional.

I completed the playfield using Titan rubbers. I think the green adds a nice pop and the orange flipper rubbers are a nice contrast that fits the cabinet color scheme. I also went with white rubber post caps instead of the standard metal speed nuts.

Here are some pics.

Jungle full.jpg
Jungle playfield.jpg

Aside from the main cabinet being a little more weathered than I would prefer, I'm happy with how it turned out. It cleaned up nicely and is fun to play a few games once in a while here at work!