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LG 55LH90-UB LED TV I have an LG 55LH90-UB LED tv that has, what seems to be, sections of dim areas.

The bottom half of the tv is dim, and an area on the upper half about 4 in by 6in wide of dim area as well. From watching some videos, the only things I can come up with is a bad inverter board or bad LED strips. I ordered an inverter board with part # 6917L-0013C which is - i hope - a next revision of the board. It was cheap so no big deal. Any thoughts? The picture doesn't change, and viewing the tv is fine for the most part just dim.

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  • 30 Answers

Hi ,
try swapping the screen with another one to just see if it is behaving the same, because some times the screen circuitry or the led screen could be damaged .

good luck buddy

Posted on May 18, 2017

  • 3 more comments 
  • Mike Grieshop
    Mike Grieshop May 18, 2017

    The display itself is fine. Its the lighting.

  • Daniel Augo
    Daniel Augo May 18, 2017

    if so you have to look for the right, same original card .

  • Mike Grieshop
    Mike Grieshop May 18, 2017

    Yea I see that I ordered one for 47" models. Do you think its a board issue or LED light strip issue?

  • Daniel Augo
    Daniel Augo May 23, 2017

    Hi,again. yes it could be a board issue e.g Voltages going to the light strip are wrong . lastly screen has gone bad .

  • Anonymous May 23, 2017

    It was the inverter backlight board. Replaced now all is working. Thank you!

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SOURCE: right side of samsung ln52a580p

This is not an issue with the main board . Its a clear case of faulty LCD controller board or the LCD panel itself is faulty(most likely). I suppose the sound is not affected?

Posted on Feb 15, 2011

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