Question about Sharp LC-40LE550U 40" LED TV 1920x1080, 60 Hz, HDTV

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Sharp TV (LC-40LE550U) without picture, but sound is fine. Very weak image with flash light. TV can be turned on with remote with green indicator.

Hello there, The TV was used two years and stop working this week without any picture. Sound is fine. With flash light, very weak image can be found. Remote can turn on indicator green and turn the TV off. I checked power supply board. I measured voltages with connected LED strips as followed CN202 (yellow) pin1: 338 pin2: 281 pin3: 282 pin4: 228 pin5: 227 CN203 (black) pin1: 172 pin2: 172 pin3: 119 pin4: 119 pin5: 0 Without connection with LED strip as followed, CN202 (yellow) pin1: 338 pin2: 0 pin3: 0 pin4: 0 pin5: 0 CN203 (black) pin1: 0 pin2: 0 pin3: 0 pin4: 0 pin5: 0 Any suggestions? Thanks a lot.

Posted by Anonymous on

  • Anonymous Mar 01, 2016

    Many thanks @ The Knight.



    Last night I checked TV again with flash light. This time I used a usb memory to play a video. I can hear sound and see very weak images only with flash light. Any further suggestions? Thanks a lot.

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The Knight

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  • Sharp Master
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Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Posted on Mar 01, 2016

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