I have a sharp aquos 32L400m and I saw a K appearing on the top, by pressing channel - & vol- I went into service mode and reset the destination to MIDDLE EAST - my channels appeared again. Th

Ken Kichi

• 150 Answers
• Posted on Dec 03, 2008

SOURCE: Sharp Aquos LC-52D64U LCD-52 wdscrn tht won't scan in digital...

Seeing that you have a superior brand and not getting channels is a bummer. It may have to do with the setting, make sure you're set to cable rather antenna and then do a rescan. Btw, often times channels from an over the antenna is much clearer than from cable because cable tv has to compress the signal. If you're high in the air like the top floor of a building a cheap $10 will pull in great free digital channels. It helps to experiment and read the troubleshooting guide in your manual.

SOURCE: Sharp Aquos Audio Intermittent

This is a problem with the ATSC channel's reception. Usually switching to another channel and back solves the problem.

SOURCE: My 37" sharp aquos LCD TV sound shuts off

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.

SOURCE: Aquos Screen Image Too Big.

I had the same problem, but it looked like my son pressed the view mode button on the remote. I set it back to Dot by Dot and it looks perfect again. Try it out.

SOURCE: My sharp aquos 32' LCD has a heavy green tint to

My sharp tv also had a green tint and resetting to facotry setting did not work, what finally worked is making sure that all cables were inserted all the way into the tv and receiver. Someone else advised this for another Tv and it worked on my sharp so it is worth a try.