Question about Sharp LC-32D6U 32 in. LCD Television

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No Sound We have enjoyed our Aquos TV for 2 years and have had no problems. We have just started having a problem where we have no sound. If we warm up the TV and turn it on and off a few times, the sound comes back. How can we fix this problem?

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  • Satandy Mar 08, 2008

    I think I have the same problem. I hear a pop in the speakers when I turn it on and get no sound at all. I tried turning it on and off but the sound only came back on when I did a reset (not system reset). The next morning it was off again.

  • Anonymous Mar 29, 2008

    I took it in to the Sharp certified service people and they said it was the main board that needs to be replaced, an almost $800 fix. Needless to say that sucks. We're trying to see if Sharp will pay for it even though we are past warranty (you never know). Hopefully the service guy knew what he was doing...

  • Anonymous Jun 24, 2008

    I have a great picture but no sound whatsoever. I have tried the reset button and the system reset button. In the menu under options I have the audio set on fixed as the manual states.

  • thebat119 Jun 25, 2008

    We have had ours for almost 2 years. A few days ago we found that there was no sound. I thought it was the HD digital box but quickly nixed that theory when a DVD was played and also produced no sound. After pulling and proding a few cables here and there, I was some how able to get sound. I found that this needed to be done every time we turned the TV on. Now 2-3 days later I am sick and tired of it and no amount of pulling or proding is producing any sound. This problem is starting to look like a major defect with this SHARP model.

  • michelle_nyc Apr 14, 2009

    I have the SAME exact problem. I have had the Sharp 32in Aquos for 3 years and just started experiencing the sound issue. I had the cable guy here 2x! I'll have it repaired. Thanks for this site - mystery solved!

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Almost all intermittent audio or audio failure problems with Sharp Aquos LC**D4U, LC**D5U, LC**D6U, and LC**D7U televisions are the result of a relatively simple design flaw involving the heatsink pad compound used on the Tripath TA-2024 amplifier chip (IC2502) found on the A/V board. This compound has a fairly low melting point and, over time, tends to seep out from between both top and bottom heatsinks onto the legs of this chip as well as onto circuitry immediately surrounding it. Further, over time the seeping compound also becomes somewhat conductive creating bridges which short the audio amplifier circuit causing everything from intermittent audio to complete audio failure.

Fortunately, in almost every case audio can be completely restored by cleaning the old compound from both top/bottom heatsinks and from both sides of the
PC board in the area immediately surrounding the chip (I used rubbing alcohol which worked quite well). Sharp has issued a service bulletin addressing this issue (LCDTV-194) wherein a ‘2502 Heat Kit’ is specified. This kit is Sharp Part Number: PSPKIT663WJZZ and is available from circuitcity.partsearch.com for $19.95. However, it’s entirely possible to get by with the heat pad only, Sharp Part Number: PSPAZA663WJKZ for only $9.95. Please note that board replacement for this problem is almost never necessary, so if you’re working with a repair technician be sure and insist that he/she be certain to try cleaning the old board and replacing the aforementioned heatsink pads before charging you for a new board.

If one is reasonably familiar with
electronics disassembly/reassembly and is willing to take their time, this can even be a DIY project. It is possible to find ‘important service references’ by simply entering LC26D4U (the 5, 6, and 7 series are very similar, and this information covers all screen sizes) into the search field at eserviceinfo.com. This will greatly aid in disassembly/reassembly of the TV, as the A/V board is somewhat ‘buried’ under other boards. Please refer to post # 373 at avsforum.com/avs-vb/showthread.php?t=647174&page=13 for pics of the information detailed here.
My knowledge of how to solve this issue came primarily from finding the research efforts of ‘Aureius’ on the AVS forums, and particularly from his taking the time to post the solution publicly so that others might save time, money, and aggravation. I'm just passing along the information. Thanks Andy!

I also wanted to mention that a couple of other very pesky common problems with these series of Sharp TV's involving symptoms of random powering-off and/or powering-on, and 'function lock-ups' of various sorts are easily remedied through two firmware updates (Main CPU: PH1UU112, Monitor: MD1UA104). These are not available to end-users via the internet but it may be possible to get the files from an understanding factory-authorized repair tech. They are installed using an SD memory card (don't use the HC high capacity sort, use only those that are NOT HC) which is inserted into a special slot in the back of the machine. For those of the DIY persuasion, information about how to check whether your TV has old firmware in need of an upgrade is readily available through internet search.

Posted on Feb 16, 2009

  • spblank Jan 20, 2011

    No pops, just nothing or everything. Also, TV did mysteriously turn itself on once or twice.

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Pop noise gives it away easily. The problem is the heat sink underneath the audio IC has melted and is shorting the audio circuit. To fix this, you'd need to take apart your TV and clean the melted residue off of the audio IC and replace it with a new Heat Insulation Pad. It's a pretty complicated job, suggest calling a local sharp authorized service center.

Posted on Mar 14, 2008

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I had no sound on my tv - everything was playing on Mono format so all I heard was a faint buzz. Reinstalling the firmware resolved the sound issue.

Posted on Jan 12, 2009

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Sir,,,kindly check the power supply or another hint is the connection of the speaker terminals,,,for a long time using it it might lose its connection,,thanksss and hope to help you,,,!!

Posted on Feb 01, 2008

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