Weird popping noise from ProJect Tube Box DS phono preamp

Discussion in 'Turntables' started by Graham Fry, Jan 12, 2018.

  1. Graham Fry

    Graham Fry New Member

    Messages:
    2
    Hi,

    I have a strange problem with my otherwise excellent ProJect Tube Box DS phono preamp. Every 63 seconds I get a popping/woodpecker kind of noise come through.
    I have eliminated the amp, speakers, turntable and cartridge.
    The noise is there right from start up and doesn't change despite how long the preamp is on/active. The noise is there whether music is playing or not.
    Does anyone have any ideas what this could be? I have also tried all the various combinations of jumpers on the back including subsonic filter and it is always present.
    Help!
    Thanks, Graham
     
  2. lilwing

    lilwing CAGE FREE AUDIO ZOO Subscriber

    Messages:
    1,064
    Location:
    Forest Grove, OR
    Welcom Graham!
    Substitute preamp then. Is everything well grounded?
    I can't imagine what that 63 second thing is...A traffic signal?
    Others will chime in. You will be smothered with suggestions from actual experts
     
  3. FileFixer

    FileFixer Active Member

    Messages:
    310
    Location:
    Zagreb/Croatia
  4. Graham Fry

    Graham Fry New Member

    Messages:
    2
    Thank you guys! Found the problem, it wasn't the router but closely related, it was a nearby Chromecast. I moved it and problem solved.

    Thank you so much, good tonknow there are helpful folks out there :)
     

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