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Buzz Noise from Receiver when TV is On.

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2 replies to this topic

#1 of 3 Glenn Verde

Glenn Verde


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  • Join Date: Feb 10 2004

Posted July 19 2004 - 02:28 AM

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 of 3 ColinM



  • 2,057 posts
  • Join Date: Dec 08 2001

Posted July 19 2004 - 03:00 AM

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.
You call that a knife?

#3 of 3 Lee Distad

Lee Distad

    Stunt Coordinator

  • 166 posts
  • Join Date: Feb 03 2004

Posted July 19 2004 - 03:34 AM

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.