Question about Sharp Aquos LC-26GD4U 26 in. LCD HDTV

1 Answer

Aquos lc-26D6U no sound

I purchased my tv in January of 06 and now I have no sound. Do you think it is the sound board. Can you emial me on how to solve this problem.
Thank you so much. Very dissapointed with TV. ham@warwick.net

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Governor:

    An expert whose answer got voted for 20 times.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Expert
  • 16 Answers

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 Apr 16, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Sharp LC-26D6U turns on to a blue screen


Your set need a though check up. It sounds that the main digital board has damaged. Before make it sure, contact any service technician and make it confirm. A panel fault too can cause this. If you wish to get more details about this kind of fault, check this link. http://electronicshelponline.blogspot.com/ If you're sound in electronics, you can follow the rest. Pull up older posts there, either by its left side bar, or, see it in 'Timeslide' option.

Jun 22, 2013 | Sharp LC-26D6U 26 in. LCD Television

1 Answer

My sharp lc-26d6u aquos got picture but no sound, anything i can do? thanks!


No sound on ALL MODES?

Let verify first to narrow down to where the problem can be. First, make sure the MUTE or SAP function is not activated, then check the on screen sound set up menu to make sure the speakers are not set to OFF. If the setting is OK, then attach the powered PC speakers to the Audio Line out RCA jacks (Red and White) to see if you can get the sound there, if you do, then the problem can be in the power amp circuits, if you do not get the sound at RCA jacks, then the problem can be in the sound processor circuit.


Please post back what you find.
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Apr 26, 2011 | Sharp LC-26D6U 26 in. LCD Television

1 Answer

The tv turns on with sound but the screen is just white


Ur tv Tuner board is dead.Replaced the Tuner board,u will get ur incomming cable or free air tv signal go through and get ur tv picture back.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner board for the replacement.

May 05, 2010 | Sharp LC-26D6U 26 in. LCD Television

1 Answer

My Sharp LC-26D6U TV - low audio


Sharp is taking care of this for customers even if you are out of warranty due to a mistake on how they made the tv. All you have to do is call Sharp at 1-800-237-4277. Please make sure that the repair shop also applies 2 firmware updates that all the D6U tv's need to avoid other known issues with the lcd in the future. These firmware updates are for the main cpu PH1UU112 and the monitor MD1UA104. Good luck!

Sep 28, 2009 | Sharp LC-26D6U 26 in. LCD Television

1 Answer

No sound at all!


I agree with everything that they are saying.
Most tv companies under design the cooling needs of the flat panel TVs. I had to fix a few TVs this way that had similar problems. Mostly with the picture on TVs freezing up because of the poor cooling design for the motherboard processor. I would give their solution a try before replacing circuit boards.

Jun 10, 2009 | Sharp LC-26D6U 26 in. LCD Television

1 Answer

Lc-46d43u aquos lcd tv


The remote code 31 worked on my Motorola cable box.
The REmote is for a Sharp LC-32GP1U
The code was listed under one of many for Jerold. I entered codes one by one testing the secondary power button each time.
Code 31 works fine.

Oct 28, 2008 | Sharp LC-26D6U 26 in. LCD Television

2 Answers

Sharp aquos LC-37D4ou


What kind of connections are you using?

If component (red, green, blue) double check to make sure they are seated properly. I'm thinking it sounds like the blue one got loose.

Mar 27, 2008 | Sharp Aquos LC-32G4U 32 in. HD-Ready LCD...

1 Answer

Sharp LC-26D6U sound issues


Capacitor is what I found out.. (Supposedly althoug Ive not verified).. If you can send here I'd love to see the unit...

(Theres a reason)....

Ken

Dec 27, 2007 | Sharp LC-26D6U 26 in. LCD Television

Not finding what you are looking for?
Sharp Aquos LC-26GD4U 26 in. LCD HDTV Logo

659 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sharp Flat Panel Televisions Experts

The Knight
The Knight

Level 3 Expert

68323 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Dave Naylor
Dave Naylor

Level 3 Expert

834 Answers

Are you a Sharp Flat Panel Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...