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I have a Sharp Aquos T.V. and right now the picture is fine but there is no sound coming from the set. I have checked the cables and they seem to be all right. I cannot imagine what could do this. I rarely watch this T.V. and bought it about 2 l/2 yrs. ago

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  • SCOTT J May 11, 2010

    please provide the model# sharp does have an know audio problem that they should cover if you call them - once i get the model # ill let you know - if you are one of the lucky - if they wont cover the fix is easy (do not change the main processor)

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I ran into this problem on two of these sets and it turned out to be a heatsink which is located beneath the main p.c.b. What happened is the putty that they use as a heat transfer compound melted and in turn the heatsink slid down and touched the main p.c.b. causing a no sound condition, or intermittent. There are a hundred screws and major disassembly/reassembly required so plan on spending a half a day. You may find an open resistor or burnt surface mount component on the board so take your time before reassembling and look for burn marks on bottom af board. As I recall there are two boards that have to be removed just to get at main board and then you pull it out to reveal a metal heatsink not secured to anything. Good luck, your welcome, Russmann.

Posted on Jun 11, 2008

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Try unplugging the TV for 2 minutes and then re-trying to power it on again and see if audio returns. Is this connected to a cable box and other types of inputs? Make sure if there is a speaker on/off function in the menu that it isn't set to off. Also can you give me a model number so I can look up part numbers if needed.

Posted on Jun 11, 2008

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A lot of thes sets develope audio or intermittent sound problems
I discovered the problem is in the main processor board and SHARP does not want to warranty these sets in CANADA. not sure about the U.S.
sorry
Guy9

Posted on Jun 11, 2008

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