Question about Sharp LC-26D4U 26 in. LCD Television

8 Answers

Sharp Aquos LC-26D4U sound problem

I have the LC-26D4U Sharp Aquos model tv. Everything has worked fine for the 18 months or so that I've had it but now it seems as if something is internally wrong with the speaker connection. When the TV first turns on I hear a popping sound come from the right speaker. The first time this happened I turned the TV on and off a few times and the problem fixed itself. Since then, however, I hear that popping sound (just from the right speaker) and I get no sound. When the sound did work, both the left and right speaker worked fine and I still only heard the popping sound from the right speaker. I have tried different connections (HDMI, component, regular video/audio cables) and still nothing. It is certainly something internal that is the problem and I was wondering if you have heard of this problem before and know of a solution or advice. I am out of warranty and do not want to pay a few hundred if this is something I can easily fix myself.
Thanks for any help.


I also have a LC-D6U 32" set and the sound has magically disappeared. I can run the sound thru my stereo but nothing from the tv directly. Sharp doesn't offer any answers, especially for a set out of warranty, and the repairman wants a fortune just to come look at it. Hoping someone knows of a solution - possibly a short or something simple.

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  • Anonymous Apr 01, 2008

    i have a sharp lc32d6u and have the same problem with the audio cutting out. forum user cet was kind enough to email me the referenced tech bulletin. i took apart my tv and identified the circuit ic1502, which had the melted insulation material, just like he described and the pictures showed. i would caution anyone else who might attempt this to be careful! if you have worked on computers, etc., none of what's inside would look unfamiliar, but every thing's tight and you have to extract 2 or 3 other boards just to get to the one in question.


    while i was in there and feeling brave, i looked at the other ic heat sinks, which all had the same condition with the failing insulation material. so i carefully cleaned the melted goop off of the ic's, heatsinks and circuit boards themselves, using a soft cloth and alcohol. there was actually one "good" piece of insulation material on one of the ic's, which i cut with scissors into equal pieces and put back on the ic's as a short term fix.


    here's my question: what is this insulation material called and where can i get it? the best way to describe it is, it looks and feels like the brown magnet part of a refrigerator magnet. i assume that even though i "jerry-rigged" it with the little pieces and it has solved the problem, i need to get more of this material, go back into the tv, and reapply larger (i.e., full surface area of the ic's) pieces, so that the insulation material works most efficiently and disperses all of the heat.

  • lourig Apr 01, 2008


    i have a sharp lc32d6u and have the same problem with the audio cutting out. forum user cet was kind enough to email me the referenced tech bulletin. i took apart my tv and identified the circuit ic1502, which had the melted insulation material, just like he described and the pictures showed. i would caution anyone else who might attempt this to be careful! if you have worked on computers, etc., none of what's inside would look unfamiliar, but every thing's tight and you have to extract 2 or 3 other boards just to get to the one in question.


    while i was in there and feeling brave, i looked at the other ic heat sinks, which all had the same condition with the failing insulation material. so i carefully cleaned the melted goop off of the ic's, heatsinks and circuit boards themselves, using a soft cloth and alcohol. there was actually one "good" piece of insulation material on one of the ic's, which i cut with scissors into equal pieces and put back on the ic's as a short term fix.


    here's my question: what is this insulation material called and where can i get it? the best way to describe it is, it looks and feels like the brown magnet part of a refrigerator magnet. i assume that even though i "jerry-rigged" it with the little pieces and it has solved the problem, i need to get more of this material, go back into the tv, and reapply larger (i.e., full surface area of the ic's) pieces, so that the insulation material works most efficiently and disperses all of the heat. thanks for any help!

  • lourig Apr 01, 2008

    re: my post above, sorry, it's actually ic2502, not ic1502!

  • hbk 01 e Apr 05, 2008

    my lcd no sound and picrture please send how solve the problems

    plz in www.electronictip@hotmail.com thank's



    BEST REGARD'S

    IBRAHIM NASSAR.

  • Bobbie D Jul 04, 2008

    Amazing my LC-32D6U (2 1/2 yrs young) just developed the same problem; no sound, sometimes came back after unplug replug but now gone for good - use of external amplifier with sound outputs from TV does work. Has anyone been able to get Sharp to fess up to this serious design flaw (and offer no cost repairs) - unless of course they say their top end expensive TVs only are designed to last for less than 3 years!

  • ohou Jul 10, 2008

    Same problem with my unit.  I have two Sharp TVs and had problems with both of them this week.  Not sure what I did to anger the Sharp Gods.


  • housofsteel Aug 04, 2008

    At two years and three months, my LC-32D6U sound went out last week exactly as others have described. A slight pop at power-up, intermittently working if unplugged for a few tries and then nothing. It would be great to have a solution come from Sharp that would help keep me as a future customer. I won't consider opening it up unless it was a simple loose wire or plug-n-play component. The sound works through a 2-channel stereo setup for the moment, but it's an added inconvenience to have to turn on (and remind others to turn off...) another component just for watching TV.



    Jonathan

  • hugobmw Aug 04, 2008




    I have the LC-26D4U Sharp Aquos model tv. Everything has worked fine for the 18 months or so that I've had it but now it seems as if something is internally wrong with the speaker connection. When the TV first turns on I hear a popping sound come from the right speaker. The first time this happened I turned the TV on and off a few times and the problem fixed itself. Since then, however, I hear that popping sound (just from the right speaker) and I get no sound. When the sound did work, both the left and right speaker worked fine and I still only heard the popping sound from the right speaker. I have tried different connections (HDMI, component, regular video/audio cables) and still nothing. It is certainly something internal that is the problem and I was wondering if you have heard of this problem before and know of a solution or advice. I am out of warranty and do not want to pay a few hundred if this is something I can easily fix myself.
    Thanks for any help.

  • pgmrblue Aug 24, 2008

    I have a lc37d6u tv purchased 22 months ago with the same problem. Thank god I am not alone. I will try the suggested solution and get back to you.

  • Anonymous Sep 07, 2008

    I have exactly the same problem on a Sharp Aquos 32" televesion. I get the same right speaker click on power up, then no sound. Pushing the system reset button on the rear of the unit temporarily fixed the problem on a couple of occassions but now the problem seems to be more permanent.

  • Anonymous Dec 05, 2008

    I have Sharp LC -32D6U and sound went also. I called Sharp support, and asked if there was a fix, even with all the complaints on internet. She stated there is no recall or warranty fix for this problem. What a joke, no more Sharp products for this dude.

  • Anonymous Jan 21, 2009

    I had the same problem - picture, but no sound a popping noise when you turn it on. We had an extended warranty so the place where we bought it from fixed it for us. We were also told that it was the insulator material that needed to be replaced.

  • Anonymous Jan 28, 2009

    32 inch model - same problem - solved by using the external outputs and buying some decent speakers with bass unit but Sharp should be ASHAMED of their behavior on this issue - they refused to answer my queries - they have lost me as a customer as well

  • Anonymous Jan 31, 2009

    I have enjoyed my 3-yr old Sharp Aquos LC-32D6U. On 1/29/2009 the sound went off. A few hours later the sound returned. Today, 1/31/2009, the sound went off again. I have a site visit scheduled for next week under an extended warranty which ends in March, 2009. I guess I am about to learn the true value of that waranty.

  • nbody Feb 10, 2009

    Does anyone know whether this is the same issue with Dell? I have the same problem with my speakers, except it's a Dell.

  • Anonymous Feb 28, 2009

    Sharp sucks ! I have the same no sound problem and they just don't care !!

  • burnedby Mar 01, 2009

    I have same problem, no sound at all though. Sound quit working one night and next day it worked. heard same crackling sound. Took to American TV where purchased...$73 to diagnose. "Thermal Breakdown of audio IC heat sync. pad. AV board needs to be replaced" the part is $402 and labor another $150.

  • sognibene Mar 09, 2009

    Hi,

    I have the same problem and was wondering if I could get a copy of the technical service bulletin LCDTV-194. Please send to: sognibene@gmail.com I would appreciate it very much.

    Steve



  • Anonymous Mar 15, 2009

    PRESSING THE RESET BUTTON SEEMED TO HELP

  • ebgas Mar 24, 2009

    Sharp LC-32D6U with same audio problems. Onboard speakers just stopped working one day. Reset button on back cured problem once, but, no more. To anyone who might have the service bulletin or repair instructions, I would be very grateful to receive a copy!
    Thank You in advance ebgas@sbcglobal.net

  • chrisden Mar 31, 2009

    Same problem. If someone will send me the service bulletin lcdtv-194, I will get it on the web and post the address here. Thanks cdennison53@hotmail.com

  • ACOLE10000 May 11, 2010

    Can someone please send me a copy of the service bulletin,, it would be much appreciated. acole@abtech.com



    Sharp Technical bulletin LCDTV-194



    Thanks,

    Adam

  • nbody May 11, 2010

    Just to clarify, I was asking whether the solution posted by CET also applies to Dell. Does anyone know?

  • Anonymous Mar 18, 2014

    The sound disappears all by itself - the sound display comes on the tv and you watch as it goes from 32 - 0 of its own accord - you put it back up and either it goes all the way down again or does it in stages - Also, it doesn't do it all the time - it can go for days and be fine. Any solutions - a tv problem or something else?

  • Anonymous Mar 21, 2014

    no sound from internal speakers and cannot choose speaker output. question marks in audio section

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This unit has a chronic problem with the insulator material used on the heat sink on the ic's on the AV Bd. The unit must be disassembled and the AV bd. removed. The insulation on especially IC 2502 breaks down and must be cleaned off of the bd. and the ic and new insulator part # PSPAZA663WJKZ must be ordered and used as the insulator pad. If you send me an email to missiontracetv@msn.com I can send you the copy of the Sharp technical bulletin LCDTV-194.

Posted on Feb 26, 2008

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For .99 cents I bought an RCA male stereo to mini (3.5mm) female adapter and connected it to the Monitor Out. Then plugged in a set of computer speakers that I had sitting around, and in the audio menu set it to variable, which allows me to adjust the volume with the remote. There are great sounding speakers available with a sub-woofer for about $30. It is a very simple fix, and the sound is much better than the speakers that Sharp built in to the TV. No need to open the TV, find the bad bored or replace anything. From Sharp failures come Sharp fixes. AW

Posted on Sep 27, 2009

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I used your site to look up a problem awhile back and was helped by a guy who went by, Les Price (missiontracetv@msn.com). I wanted to post the results of what he suggested, however the site will not let me type in the “solve” box, after the box opens. Can you post this for me.

I purchased a Sharp LC-26D4U LCD television and after about 16 month, the sound went on the TV. I could not get anything but popping noises out of the speakers. I hooked the TV up to a stereo and the sound worked only while using the stereo speaker from the stereo, still nothing from the TV speakers.
I searched this problem on your web site and saw a posting in which this Les Price (missiontracetv@msn.com) posted a fix. He stated this unit had a chronic problem with the insulator material used on the heat sink on the ic’s on the AV bd. He stated the unit had to be disassembled and the av bd removed. He stated the insulation on the ic 2502 breaks down and must be cleaned off and that a new insulator, part # PSPAZA663WJKZ must be ordered and used as the insulator pad. He stated there was a Sharp Technical bulletin LCDTV-194, which explained the problem and suggested this fix.
I Goggled the suggested part #, PSPAZA663WJKZ finding and ordering the part from www.electronics-storefront.com. I got a copy of the service bulletin, which had pictures and instructions on the repair.
On 25-Jan-09, I disassembled the TV, removing the back, a metal mount under the plastic back, and three circuit boards, locating the heat sink on the back of the AV board. I left the black sticky residue on the heat sink as the service bulletin suggested and installed the new insulator pad as shown on the service bulletin. I put the TV back together and found the TV volume to work again. I could not believe it worked.
Taking the TV apart made me a little nervous. I am not a repairman, however I do like to, “Tinker” with stuff. There were a lot of screws and wires to keep track of and a little tricky to put back together. If I had to do it again, I would either video tape the disassembly to make sure I replaced everything back the way it was, or at least take a few photos while disassembling.
I just wanted to say thanks for your web site and thanks to Les Price for his help. You both saved me some cash.

Posted on Jan 26, 2009

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Thank you C E T and Russds.  It worked!  I found the part at partstore.com and it costs me $22.88 (even though the bag for the insulation material says it costs 600 yen).  Don't mind the mark up when it works (the last time I tried fixing a tv, I ended up breaking the lens).

Posted on Jul 19, 2008

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I found a post elsewhere on this site by Ggleg,his post started me in the right direction,what seems to be the problem with several models in this series is the heat-sink insulators break down and start leaking on the chips and boards the worst problem is that under the input board,under ic502 there is a heat-sink that is insulated from the circuitry by one of these insulators,what happens is that the heat-sink slowly works through the insulator and shorts the circuit,there may be a kit to replace the insulating pads for the board.the best solution is to remove the residue(Ggleg said it is conductive also)and replace the pads with a better
material I used silicon rubber sheet and cut to size thickness was about 1/16. Tv has been fine ever since.
Scott

Posted on May 25, 2009

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I went with the solution posted by C E T. (Thanks for the tech bulletin) First time I ever tried to fix a TV, but I thought I would try it seeing as the part was only $25 shipped. You will be disappointed when you see what i consists of, but guess what - it worked. It took me a little hour and it works perfectly. It takes little patience and a lot of guts to try it. First time back together, nothing worked, but who ever heard of fixing a TV for $25. I have now. Thank you CET.

Posted on Apr 28, 2008

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I am also looking for the copy of the Technical Bulletin LCDTV-194? Can someone email effexor26@hotmail.com. I am pretty handy - will I be able to do this myself without destroying the tv? Tips?

Posted on Mar 08, 2009

  • effexor26 Mar 08, 2009

    I am also looking for the copy of the Technical Bulletin LCDTV-194? Is it available anywhere online? Can someone email effexor26@hotmail.com. I am pretty handy - will I be able to do this myself without destroying the tv? Tips?

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Send the Sharp to the garbage heap and buy a TV from a company that knows how to make one

Posted on Sep 08, 2008

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