(Topic ID: 234329)

Help with Bally 7 Digit Display


By Fordiesel69

5 months ago



Topic Stats

  • 14 posts
  • 6 Pinsiders participating
  • Latest reply 5 months ago by Fordiesel69
  • No one calls this topic a favorite

You

Linked Games

No games have been linked to this topic.

    Topic Gallery

    One image has been uploaded to this topic. (View topic image gallery).

    Display (resized).jpg

    #1 5 months ago

    Can anyone tell me what location the drivers are for this digit? Also the location of the resistors?

    Thanks.

    Display (resized).jpg
    #3 5 months ago

    Changed Q3 and Q9 with no success. They tested perfect so i didnt thing that was it. Anything else I should check. Nothing burnt, and all solder is reflowed as there was cold joints on header.

    #4 5 months ago

    Keep on reading section 5.12.2.8. Resistors can measure out of spec with no visible sign of damage.

    #5 5 months ago

    Check the 100k resistor for that digit. They often fail.

    #6 5 months ago
    Quoted from jj44114:

    Check the 100k resistor for that digit. They often fail.

    These are in the row close to the glass.

    #7 5 months ago

    R5 was open. Looked perfect. Two of my brand new ones were open too...

    #8 5 months ago

    Yes it’s a resistor failure for sure. You have to pull from circuit and test

    #9 5 months ago

    When you compare the resistance on all the 100k reaistors on the board, it will be very noticable. Resistance goes higher as the resistor fail.

    #10 5 months ago
    Quoted from Barakawins1:

    You have to pull from circuit and test

    Thought that was for a diode, not resistor?

    #11 5 months ago

    Sometimes resistors test funny in circuit. I always pull one leg. It should be a 100k ohm resistor.

    #12 5 months ago

    The 100k resistors can be tested in circuit. Any where between 80k and 130k is fine. They fail by burning and going open or having very high resistance.

    #13 5 months ago

    Does the problem move if you swap the display with another?

    #14 5 months ago

    I replaced R5 and all is well. Thanks.

    Promoted items from the Pinside Marketplace
    $ 79.00
    Cabinet - Armor And Blades
    PinGraffix Pinside Shop
    From: $ 99.99
    $ 79.99
    Cabinet - Shooter Rods
    Great American Pinball
    $ 16.50
    Lighting - Led
    Lermods
    $ 84.95
    Cabinet - Shooter Rods
    Super Skill Shot Shop
    From: $ 9.99
    Eproms
    Matt's Basement Arcade
    From: $ 7,500.00
    $ 89.99
    Playfield - Toys/Add-ons
    Lighted Pinball Mods
    $ 999.00
    Flipper Parts
    Mircoplayfields
    £ 58.00
    Cabinet - Decals
    Sillyoldelf Mods
    $ 35.99
    Lighting - Interactive
    Lee's Parts
    From: $ 42.00
    Cabinet - Shooter Rods
    ModFather Pinball Mods
    $ 8,999.00
    Pinball Machine
    Nitro Pinball Shop
    $ 11.95
    $ 27.99
    Eproms
    Matt's Basement Arcade
    $ 50.00
    From: $ 25.00
    Gameroom - Decorations
    Gameroom Mods
    From: $ 5,799.00
    Pinball Machine
    Great American Pinball
    $ 45.00
    Playfield - Toys/Add-ons
    Just 3D Mods
    $ 49.95
    Playfield - Plastics
    MicksPinball
    $ 69.95
    Cabinet - Shooter Rods
    Super Skill Shot Shop
    $ 229.99
    Lighting - Other
    Lighted Pinball Mods
    $ 5,799.00
    Pinball Machine
    Gulf Coast Pinball, LLC
    From: $ 99.99
    Cabinet - Other
    Lighted Pinball Mods

    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