(Topic ID: 272018)

Bally/Stern Display Repair Guides?


By ibis

14 days ago



Topic Stats

  • 7 posts
  • 5 Pinsiders participating
  • Latest reply 13 days ago by jj44114
  • Topic is favorited by 1 Pinsider

You

Linked Games

No games have been linked to this topic.

    #1 14 days ago

    Does anyone know of a step-by-step guide to testing, troubleshooting and repairing these displays? I know Pinwiki has info on them but its not exactly an easy 'guide' on how to fix them. Its more of a lesson of sorts and its kind of hard to follow. I would love to learn this process and repair technique. If there isn't one, maybe someone can offer to post one?? Would be awesome!

    #2 14 days ago

    pm sent with some great info from Steve Kulpa.

    Here's the link from the wayback machine as it's no longer live: https://web.archive.org/web/20170612235057/http://stevekulpa.net/pinball/bally_disp6r.htm

    #3 14 days ago

    #1. The male connector always have broken solder joints. Besides that the basic failures are....

    Digit always on (bright) is bad level shifter. Bad level shifter left too long will burn out the 100k resistor

    Digit always off bad digit driver or burnt 100k resistor, usually resistor burns because a digit locked on.

    Same segment of each digit on a single display is probably bad segment driver or bad 4543 decoder chip.

    Digit counts wrong on all displays 1,1,3,3, etc. Try one display at a time. Still wrong count display BCD data issue between MPU and displays, connectors! If wrong count stays at only one display and connectors are good bad 4543 decoder chip

    Gibberish random segments on all displays. Try one display at time. If you find one display effecting the rest that display probably has a bad 4543 decoder. Because the data is shared one bad decoder can muck up the rest.

    Segment driver, level shifter, and digit driver are all labeled on the schematics

    #4 14 days ago

    I remembered that Bally actually did make a step by step repair procedure. It is in the 560-03 pinball repair book and starts at page 46.

    http://arcarc.xmission.com/Pinball/PDF%20Pinball%20Misc/Pin%20Repair.pdf

    I honestly don't usually like probing around HV stuff tho. After fixing a few games with display problems you can usually tell what component is bad just by the behavior of the display, after of course making sure the connectors are good.

    #5 14 days ago

    Thanks for all the info. I think some of the diagnosis steps are just basically needed. Like if a digit is always off, the 100K resistor is probably bad, but it went bad because the level shifter was bad. So its like a cascade effect. All great info and thanks so much, looking forward to learning more about general repair of these displays.

    #6 13 days ago
    Quoted from ibis:

    Like if a digit is always off, the 100K resistor is probably bad

    https://www.pinwiki.com/wiki/index.php?title=Bally/Stern#One_digit_is_out_on_one_of_the_displays

    Are you sure you looked in the "Problems and Solutions" section of the PinWiki?
    --
    Chris Hibler - CARGPB #31
    http://www.ChrisHiblerPinball.com/Contact ... for board repairs
    http://www.PinWiki.com - The Place to go for Pinball Repair Info

    #7 13 days ago

    It’s all there.

    Promoted items from the Pinside Marketplace
    $ 14.00
    Electronics
    Yorktown Arcade Supply
    From: $ 9.99
    Eproms
    Matt's Basement Arcade
    $ 9.99
    From: $ 495.00
    Cabinet - Armor And Blades
    MI Pinball Refinery
    From: $ 18.00
    Apparel - Men
    Pinside Shop
    $ 11.95
    Playfield - Toys/Add-ons
    ULEKstore
    $ 54.99
    Cabinet - Shooter Rods
    Lighted Pinball Mods
    $ 12.00
    Lighting - Led
    Pinball Haus
    $ 79.99
    Cabinet - Shooter Rods
    Great American Pinball
    From: $ 42.00
    Cabinet - Shooter Rods
    ModFather Pinball Mods
    $ 3.00
    Playfield - Decals
    Doc's Pinball Shop
    $ 9.99
    Eproms
    Matt's Basement Arcade
    From: $ 42.00
    Cabinet - Shooter Rods
    ModFather Pinball Mods
    $ 10.00
    $ 79.99
    Cabinet - Armor And Blades
    PinGraffix Pinside Shop
    From: $ 10.00
    Playfield - Plastics
    Maple Street Sign Shop
    $ 45.95
    Playfield - Toys/Add-ons
    Hookedonpinball.com
    $ 7.50
    Playfield - Decals
    Pinball Haus
    $ 22.00
    Cabinet - Sound/Speakers
    ModFather Pinball Mods
    $ 86.95
    Cabinet - Shooter Rods
    Super Skill Shot Shop
    $ 89.99
    $ 15.00
    Cabinet - Decals
    ModFather Pinball Mods
    From: $ 38.00
    Playfield - Decals
    Pinball Mod Co.
    $ 19.95
    Playfield - Toys/Add-ons
    ULEKstore

    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