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LG 55UL6200 that suddenly will not power on

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    LG 55UL6200 that suddenly will not power on

    Hi folks!

    I was hoping you could help me identify my issue with my TV, or point me in the direction of useful information. From my original research I thought it was the power board, so I bought one from ShopJimmy, but after I installed it the problem persists. I've looked around at a lot of proposed fixes and it's not clear what the right one might be.

    I have an LG 55UL6200. On 3/14/2023 it stopped turning on. The red indicator light comes on when the power button is pressed. On subsequent presses, the screen barely goes on for a few milliseconds, and the red light flashes three times. It goes on for such a short time that it took me a while to notice that it went on at all. All I can catch is a glimpse of the bar in the top left that indicates what input it is on, before it is back off. Most of the screen is black the entire time. I have tried all of the easy fixes, like unplugging the TV and holding down the power button, using different outlets or cords, and leaving it unplugged for multiple days.

    I read the LCD TV basic troubleshooting guide best I could, but honestly it's over my head. I've always had a small interest in electronics but I have no training. Only thing I could glean from it is perhaps it's the T-CON board.

    Thank you for any and all help you are able to provide!

    #2
    Re: LG 55UL6200 that suddenly will not power on

    you have the led back light fault.

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      #3
      Re: LG 55UL6200 that suddenly will not power on

      I agree with Diah, it is a backlight issue. My suggestion is to order the whole set of led back light. Should be about $30 - $40 on eBay but look for a US shipping or you have a long wait. Get the backlight for right TV make and model and be gentle with the removal of the screen, and the little pillars that hold the screen up. Many YouTube videos on replacement of backlight.
      Final note, these LCDs are meant for non-repair so be extra gentle with removing the back cover clips.

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