(Topic ID: 195788)

Williams System 11A Bowler(Tic Tac Strike) Sound Hum-SOLVED!

By vdojaq

2 years ago

Topic Stats

  • 5 posts
  • 2 Pinsiders participating
  • Latest reply 2 years ago by vdojaq
  • No one calls this topic a favorite


Linked Games

No games have been linked to this topic.

    #1 2 years ago

    I have looked through several threads here on this issue to see if I can at least suppress this obnoxious sound hum in attract mode. The hum is commensurate with the attract mode lights, the more the lights, the louder the hum. It's loud.

    This machine uses no separate sound board, it is all run through the 11a MPU, so the sound section is populated. I have tried the cleaning of the mounts for the MPU and making sure each screw is there and tight.

    Anymore ideas?

    #2 2 years ago


    The JokerZ is also a sys11A

    Have a look to this thread I initiated. Unfortunately, I have not had the time to make anything on my pin.


    #3 2 years ago

    No, that's an 11b with a sound card, but thanks.

    #4 2 years ago

    Sorry, wanted to help

    1 week later
    #5 2 years ago

    After going round & round with this damn sound issue I finally got it solved . Not only was this thing humming loudly with the attract lights, but also found the sound would not go low either. I would turn the sound potentiometer all the way down , but this thing would stay loud. If I unplugged the connector for the volume, it would go quiet and the humming would go way down, so it's got to be a bad potentiometer right? Ran off to Pinball Life and got a new 10K volume potentiometer. Installed it and NO change. WTF???? Clay has written quite a bit on this issue on system 11 A's sound, so I decided to fire an email off to him. As I was writing and describing my issues it dawned on me that it had to be in the volume control circuit. I almost ran back to the machine and decided to pull each of the 3 pins in the molex connector and there it was, a cracked connector pin. I re-pinned all three wires and like magic, the hum was gone and my volume control is perfect!

    How many times must the obvious be overlooked.....re-pinning connectors!

    Promoted items from the Pinside Marketplace
    $ 239.99
    Lighting - Led
    From: $ 6,499.00
    Pinball Machine
    Flip N Out Pinball
    $ 69.99
    Playfield - Toys/Add-ons
    Lighted Pinball Mods
    $ 45.99
    $ 65.00
    Cabinet - Armor And Blades
    Texas Pinball
    $ 99.99
    Playfield - Toys/Add-ons
    Lighted Pinball Mods
    $ 59.00
    $ 24.95
    Playfield - Toys/Add-ons
    $ 8.95
    $ 7.00
    APB Enterprises
    $ 44.95
    Playfield - Toys/Add-ons
    PinBoss Mods
    $ 5.00
    Playfield - Decals
    Pinball Haus
    From: $ 17.50
    Apparel - Men
    Pinside Shop
    $ 84.95
    Cabinet - Shooter Rods
    Super Skill Shot Shop
    From: $ 7.60
    Cabinet Parts
    $ 20.50
    Playfield - Toys/Add-ons
    The MOD Couple
    $ 239.99
    Lighting - Led
    From: $ 220.00
    $ 48.00
    Cabinet - Other
    ModFather Pinball Mods
    $ 27.99
    Matt's Basement Arcade
    $ 25.00
    Playfield - Decals
    $ 22.00
    Cabinet - Sound/Speakers
    ModFather Pinball Mods
    $ 18.25
    Playfield - Toys/Add-ons
    The MOD Couple
    $ 39.95
    Playfield - Toys/Add-ons

    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