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My gv47lfhdtv has picture but no sound has static noise

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Check whether the audio is muted by accidental press at remote control button. Enter its sound menu, and check it. If muted, as you know there will be no audio output. If not muted, check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

Posted on Nov 22, 2014

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Posted on Jan 02, 2017

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Sound will go to loud static noise, but picture is fine


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1 Answer

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The symptom sounds like a dead tuner and the screen blanking may be due to missing video synchronization signals which may cause either blanking or 'blue screen' on some sets.
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I was told that the problem was the master control board and the cost was about $545 plus shipping . now this was because I am a Copier technician that also repairs Computers So I know how to replace this board. I you have to you might need someone to Install it for you.\

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It sounds like one of those cables has a defective ground. The static noise you are experiencing is cause by the cables not inside the TV. Try using different cables to isolate the problem and get new ones.
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