New! Dark mode!

Browsing Pinside at night? Getting tired of all the white? Switch to dark mode using the button in the top right (or CTRL-B)!

(Topic ID: 170408)

Gtb Joker Poker (solid state), score displays issue


By njPinWiz

4 years ago



Topic Stats

  • 12 posts
  • 5 Pinsiders participating
  • Latest reply 3 years ago by Slogan1111
  • Topic is favorited by 1 Pinsider

You

Linked Games

Topic Gallery

There have been 2 images uploaded to this topic. (View topic image gallery).

IMG_0090 (resized).JPG
IMG_0091 (resized).JPG

#1 4 years ago

Score displays on my Gottlieb Joker Poker solid state machine are acting up. When I turn on the machine each display for each of the 4 players show all 1's across the 6 positions and the current high score of 929,801 (1st photo).

When credit button pushed, each displays shows 1's straight across all 6 positions (2nd photo)

Any ideas of what to check first or what the cause could be? I am OK with fixing EMs but solid state machines are more of a mystery to me.

Thanks.

IMG_0091 (resized).JPG

IMG_0090 (resized).JPG

#2 4 years ago

Turn the game off. Pull the display data connectors and check them for broken (contact flange gone) or sprung (lost springiness of contact flange) female pins. While you're in there check ALL connectors for the same problems.

Once connectors are confirmed good, with game OFF disconnect all four player displays and Credit/BIP display. Reconnect P1. Power up. Still shows 1s? Power off. Disconnect P1 and connect P2. Repeat with P3 and P4. NEVER connect or disconnect displays with game ON.

There should be a diag button inside the door that will step through to a display test. See how that looks after dealing with connectors...unless dealing with connectors fixes it.

Results?

#3 4 years ago

Thanks cody_chunn, will give that a try and report results later....

#4 4 years ago

Update: removed connectors and tested individually...no change. I inspected closely, the chips Z16 & Z17 and re-seeded them. That seemed to correct the problem, at least for now. Will continue testing over the next few days. If I am lucky, it was just a loose connection on those ICs.

#5 4 years ago

Yes, people forget that chip sockets are just more 30-year-old connectors...

#6 4 years ago
Quoted from njPinWiz:

and re-seeded them.

The term is re-seat, not re-seed. You are seating the chip in the socket.

Quoted from njPinWiz:

That seemed to correct the problem, at least for now. Will continue testing over the next few days. If I am lucky, it was just a loose connection on those ICs.

Are the legs on the chips tarnished, dirty, or blackened? I usually clean them off with a rectangular pink rubber eraser.

#7 4 years ago

Thanks Force for clarifying the terminology...legs on chips seemed fairly clean so I didn't do anything to them - am always worried I will break them off. But I like your idea of using a rubber eraser.

#8 4 years ago
Quoted from njPinWiz:

Thanks Force for clarifying the terminology...legs on chips seemed fairly clean so I didn't do anything to them - am always worried I will break them off. But I like your idea of using a rubber eraser.

Just rub down the leg from top to bottom...NEVER side-to-side.

#9 4 years ago

I had the same issue with my Close Encounters. Replaced the old power supply board with a new Rottendog board. Problem solved.

#10 4 years ago

When get display issues like this on my SS JP i found it was usually bad batteries causing memory issues, I think anyways.
What I would have to do is replace the batteries than on the next boot go through all the audits and hit reset on the CPU for each item. Then they would no longer have random digits.

#11 4 years ago

Thanks Slogan & pinfarmer for your suggestions. I had replaced the power supply board about a year ago when I bought the machine, so that component is good. It is time to change the batteries, certainly can't hurt. JP is playing and scoring well now - re-seating the connectors and cleaning the legs of the two chips seems to have worked.

1 week later
#12 3 years ago

Replaced with a brand new board? Or older, original board type, refurbished, etc.? Mine was doing the same thing, would be fine one day then the next, it was goofy. When I was dealing with this problem, I read that those old p/s board were basically crap, mainly because of age. Anyways good luck, hope you can solve, not seeing the proper score is always a drag!

Promoted items from the Pinside Marketplace
From: $ 5.00
Cabinet - Other
Rock Custom Pinball
From: $ 40.00
Cabinet - Other
Rock Custom Pinball
From: $ 18.00
Apparel - Men
Pinside Shop
$ 289.00
From: $ 20.00
Cabinet - Other
Rock Custom Pinball
$ 4.00
Playfield - Decals
UpKick Pinball
$ 49.00
$ 14.95
Playfield - Toys/Add-ons
ULEKstore
From: $ 42.00
Cabinet - Shooter Rods
ModFather Pinball Mods
$ 10.00
Playfield - Other
Loop Combo Pinball
$ 28.00
Playfield - Other
Pin Monk
From: $ 35.99
$ 38.99
Lighting - Interactive
Lee's Parts
$ 149.00
Playfield - Toys/Add-ons
Sparky Pinball
$ 9,500.00
Pinball Machine
Great American Pinball
$ 15.00
$ 5.00
Playfield - Decals
Doc's Pinball Shop
€ 95.00
Lighting - Led
FlipperLED
$ 79.99
Cabinet - Armor And Blades
PinGraffix Pinside Shop
$ 18.00
Playfield - Toys/Add-ons
The MOD Couple
$ 5,899.00
Pinball Machine
Little Shop Of Games
$ 7.95
Cabinet - Other
Arcade Upkeep
$ 66.95
Cabinet - Shooter Rods
Super Skill Shot Shop

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside