Why

Discussion in 'Archived Threads 2001-2004' started by Mark Littlejohn, Aug 30, 2001.

  1. Mark Littlejohn

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    Why when I connect my audio RCA cables from my sat rec directly to my tv it hums, but if connected to my av rec it sounds normal. On 2 diffrent kind of recievers upstairs and down.
     
  2. Bob McElfresh

    Bob McElfresh Producer

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    Uhhhh...a more descriptive subject line might give you better response.
    A HT system often gets a humm from CATV coax. Do you also have CATV hooked up? Wire it so you get the humm, then disconnect your main CATV cable. Does the humm remain?
    There are a few ways to solve this.
    The other source of humm is a ground-loop caused by plugging your equipment into different outlets, but this usually happens when you have 2 amplifiers (like a receiver and a self-powered sub).
    You kind of need to narrow the problem down a bit.
     
  3. Glenn Overholt

    Glenn Overholt Producer

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    This is the same TV? If so, then I think that the TV connection is shorted. Sorry!
    If you're feeling brave and follow all of the safety precautions, you could open it up and probably fix it in less than 10 minutes, but be advised that just because the TV is unplugged there is still about 20 thousand volts just waiting for a willing body part! It really smarts - oh, and can kill.
    Glenn
     
  4. KenA

    KenA Stunt Coordinator

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  5. Jerome Grate

    Jerome Grate Cinematographer

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    It sounds like the short is in the T.V. Try it by hooking up the audio connections from the VCR and see if it hums. If it does, their's you proof.
    ------------------
    If loving Home Theater is
    wrong, I don't want to be
    right!!!
     

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