(Topic ID: 249058)

D-11610 numeric displays not working


By BabyPac

1 year ago



Topic Stats

  • 8 posts
  • 3 Pinsiders participating
  • Latest reply 1 year ago by BabyPac
  • No one calls this topic a favorite

You

Linked Games

No games have been linked to this topic.

    #1 1 year ago

    The top two AN displays work fine but the bottom two got nothing. I've reflowed all the headers and tested that the ribbon cable and MPU are good by using a rottendog replacement display (all four work fine on that one).

    Is there a single part they have in common that might cause both to be dead? Looking at the 4050 or 7180 chips, perhaps? Nothing physically damaged on the board (no toasted resistors, etc.)

    Be gentle - primarily a vid guy here!

    TIA

    #2 1 year ago

    Might want to say what game your working on.

    #3 1 year ago

    Williams System 11.

    F-14 Tomcat.

    #4 1 year ago

    Bueller?
    Bueller??
    Bueller???

    #5 1 year ago

    If the top two original displays are dead, then I'm guessing the tubes have aged out. Were you planning to put in the LED replacement, or did you want to fix the original? You may be able to find replacement tubes, but you're going to have to swap those out. It's not difficult, but it IS tedious.

    If you're still looking for something systemic, I don't have an F-14, but I seem to recall all the display tubes are on the same board? You can always check the schematics and verify that the power pins on the upper displays are indeed getting power. It seems unlikely that the board would have a trace failure causing loss of voltage, but I guess it's not impossible. You can find that if you test with the meter.

    Did you buy the game with the displays non-working, or was it working and then the top two died at the same time? That alone is going to be pretty unusual.

    #6 1 year ago

    Thanks.

    Well, the top two work fine, that alphanumeric ones. The bottom two, just the numeric, are dead.

    Looks from the schems that the AN and N displays do have different pinouts, so swapping an upper and lower for troubleshooting purposes is out.

    I've got some 7180 on the way. Will update then.

    #7 1 year ago

    Piggybacking all the 7180 changed nothing. Last ditch effort will be testing the resistors 14, 15, 16 and 17 out of circuit.

    #8 1 year ago

    No go on any of that. Guessing the bottom two are gassed. The top two are getting =/- 85v as are the bottom two, so they all should at least show something at this point.

    Promoted items from the Pinside Marketplace
    $ 115.00
    Cabinet Parts
    Merf's Pins
    $ 15.00
    Cabinet - Other
    Filament Printing
    $ 89.00
    Cabinet Parts
    Pappy's Pinball Palace
    $ 36.99
    Eproms
    Matt's Basement Arcade
    $ 99.99
    Playfield - Toys/Add-ons
    Lighted Pinball Mods
    $ 209.99
    Lighting - Led
    PinballBulbs
    $ 69.00
    Playfield - Toys/Add-ons
    The MOD Couple
    $ 79.99
    Cabinet - Armor And Blades
    PinGraffix Pinside Shop
    $ 60.00
    From: $ 9.99
    Eproms
    Matt's Basement Arcade
    $ 79.95
    Cabinet - Armor And Blades
    Little Shop Of Games
    $ 7,599.00
    Pinball Machine
    Great American Pinball
    $ 334.95
    $ 7,295.00
    Pinball Machine
    Little Shop Of Games
    $ 7,700.00
    Gameroom - Decorations
    The Flipper Room
    $ 25.00
    Playfield - Decals
    Metal-Mods
    $ 799.00
    Flipper Parts
    Mircoplayfields
    From: $ 99.99
    Cabinet - Other
    Lighted Pinball Mods
    $ 12.95
    Playfield - Toys/Add-ons
    COINTAKER.COM
    $ 239.99
    Lighting - Led
    PinballBulbs
    $ 42.00
    Playfield - Toys/Add-ons
    ModFather Pinball Mods
    $ 29.95

    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