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I have a brand new Sony Bravia flat screen HDTV hooked up to Charter Cable. There is a constant background humming sound which is really annoying. If I turn down the tv volume (to where I can't hear the hum) and turn up the cable volume full blast it isn't loud enough to hear the program. If I mute the Tv with the remote the buzz goes away. If I mute the cable with the remote the sound goes off but the buzz remains.I have had the cable box switched out. The Charter guys have been to my home twice and can't seem to fix it. I heard I may need a ground loop?

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  • mcconnkk Mar 13, 2008

    The solution of using a ground isolator did the trick. Thanks eagle338!!

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If the hum is low in pitch, it can be a product of improper grounding.
Another tip is to make sure your TV, Receiver and cable/ satellite box are all plugged into the same electrical circuit in your home. Sometimes, different wall outlets in the same room are wired to different circuits, and they can have different ground potentials, producing a hum. Lastly, If you have Cable TV or Satellite TV, unplug the coax wire that connects from the wall to your cable/ DBS box. If this stops the hum, then you need to purchase a ground isolator such as the one listed in the website cited. This particular one works with Digtal cable and Satellite systems. If none of these work, you may have to call a specialist to come look at your system in your home to fully diagnose the problem.

http://www.mcminone.com/product.asp?catalog%5Fname=MCMProducts&category%5Fname=3829969&product%5Fid=33%2D8700

Posted on Mar 11, 2008

  • eagle338
    eagle338 Mar 11, 2008

    Let me know if it worked so that we can follow up on this..

  • eagle338
    eagle338 Mar 13, 2008

    You are welcome my friend!

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Hey, first thing that comes to mind is that your cables are faulty.

OR

your receaver (or what your tv is connected to) Is causeing the buzz.

Possible reasons: the device has a bad connection or bad signal. Or your powersystem is unstable.

Heres a text about GroundLoop.
http://www.epanorama.net/documents/groundloop/

If you need more assistance let me know!

Posted on Mar 11, 2008

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