Question about Sharp LC-32D6U 32 in. LCD Television
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
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
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
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
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Jul 15, 2010 | Sharp Aquos LC-20B6U/LC-20B6E 20 in....
Apr 07, 2010 | Televison & Video
Jun 22, 2009 | Sharp Aquos LC-37GD6U 37 in. LCD HDTV
Mar 29, 2009 | Sharp LC-32D41U 32 in. LCD Television
Jan 09, 2009 | Sharp Aquos LC-42D62U 42 in. LCD HDTV
Dec 24, 2008 | Sharp Aquos LC-46D62U 46 in. LCD HDTV
Feb 08, 2018 | Sharp Aquos LC-45GD6U 45 in. LCD HDTV
Feb 26, 2008 | Sharp Aquos LC-37GD6U 37 in. LCD HDTV
Apr 12, 2015 | Sharp LC-32D6U 32 in. LCD Television
459 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: