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Buzz Noise from Receiver when TV is On.

Discussion in 'AV Receivers' started by Glenn Verde, Jul 19, 2004.

  1. Glenn Verde

    Glenn Verde Member

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    I am getting a low buzz noise through my speakers when the TV is turned on to play DVDs. When I just listen to music and the TV is off, there is no noise. At first I thought there was some kind of ground loop causing the noise and thought it could be my NAD reciver or my amp, until I found out that the TV being on was causing it. Could the noise be coming from a bad groung through the cable box? Thanks. Glenn
     
  2. ColinM

    ColinM Well-Known Member

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    Interference from the CRT, methinks. I get the same thing, but my AVR is stacked next to the TV in a cabinet, so I'm not suprised.
     
  3. Lee Distad

    Lee Distad Well-Known Member

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    Also, you may well have a ground loop hum coming from your RF cable line.

    If it's not properly grounded, the simplest and cheapest way to eliminate it is to buy two 75-ohm to 300-ohm pigtail connectors, mate them so that the 300-ohm ends are together, and interpose the contraption into the cable line before it reaches your cable box.

    I'm no electrician (not even close), but it's a $3 solution that was shown to me years ago, and time and again it works, although in all honesty, I have no idea why. I can guess, but better qualified people than me on this board can probably explain it better.
     

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