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No power to my TV, 42LC7D

I tried to turn on the tv just now. no power. Unplugged the cord, replaced it nothing. No power at all.

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  • AisyDaisy Dec 31, 2007

    not yet. having lg come out to take a look at it. it is still under warranty

  • Anonymous Jan 06, 2009

    when tv is plugged in the red standby led light comes on and immediatly goes out

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Where you able to fix this?  I have same model and need a screen

Posted on Dec 31, 2007

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1 Answer

LG 42LC7D turns on ok but no display or sound,tried using monitor out with another tv but no picture either


Check to make sure you have the right input selected for the input that ou have plugged into.

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I have the exact same issue as the unsolved problem below on this page: I have a LG 42LC7D that is about 3 years old. A Problem with the LG 42LC7D-UB Television I have a LG 42LC7D that is about 3 years...


The power on problem is a cap in the power on circuit. The loss of signal for an areal is delayed. Nothing you can for DIY.It needs repair shop visit.

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Only av input is working LG 42LC7D TV


I may put money that some one did stole your internal cable from the power supply to the main board !

Don't be surprised they did it to me at LG company .

Jul 26, 2010 | LG 42LC7D-UB Television

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The power went off at my house due to an overload and when the breaker was turned back on, the tv had no power, no green or orange light. I unplugged the power cord and plugged it in later and the tv...


The power supply board is dead,that the board where the power cord plug into it.Take ur tv aparts,replaced the power supply board,ur tv should work again.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

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No Sound, No Picture on LG 42LC7D


I do not have a solution but I have the same situation with my tv

Dec 27, 2009 | LG 42LC7D-UB Television

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Cuts off


Most likely the power supply board.

Lie the tv down on a bed and unscrew the back. Its only about 9 screws around the edge and look at the power board, on the left, see if theres any burn marks.

I have a brand new board I bought the other day for the same issue but before I replaced it, stupidly, I checked with LG and turns out mine is still under warranty so I'm stuck with a new board.

Let me know if you want it. I'll match any price you can find online.

Mar 20, 2009 | LG 42LC7D-UB Television

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I need sreen for LG 4LC7D-UB because the screen is damaged

Mar 16, 2009 | LG 42LC7D-UB Television

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Tv turns off after 15 minutes of use


For bobby11 and luis, it is the power supply. Part Number EAY34797001 in the 42" and EAY34796801 in the 32". This is a known problem, and somebody should start a Class Action against LG over this one. Part is available online and easy to swap out for anyone with the most basic knowledge.

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Bad Convergence circuit , replace 2 STK392-110 & fuse will take care the problem

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