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

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No sound after a year. TV turns on by itself

After more than a year of great quality picture, the Sound has quit.
When he had cable the TV used to turn ON by itself often times. We were advised to a local dealer by Sharp, since we do not have extended warranty on this product.

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  • sognibene Mar 10, 2009

    Hi tslack, I was wondering if I could get a copy of this bulletin LCDTV-194. I would greatly appreciate it. Please email me:
    sognibene@gmail.com

    Steve


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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 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.

I have the same problem with the TV occasionally turning itself on but it only happens once in awhile. Still have not found out why this happens.

Posted on Jan 26, 2009

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