Question about LG 42LB1D 42 in. HD-Ready LCD TV

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TV with grey screen turns self off

I have a 42" LG flatscreen TV that will turn on with only a grey screen and will turn self off in a few minutes. No sound or picture

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  • Anonymous Apr 15, 2009

    Do you think it is wise to change out all of the capacitors or just the one that is bad?

  • Anonymous Mar 24, 2014

    im able to turn it on but when picture turns all gray but still able to hear it



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This is an issue with the power supply. The capacitors used are faulty and you likely have to get a new board(about $400.00) or fix it yourself. LG's are quite east to disassemble.

You will be able to tell it is the power supply board due to the cable running from the plug to the board. It will look similar to thisTV with grey screen turns self off - 38376af.jpg

Next locate the bad capacitor, likely green and about the size of a quarter. You will be able to tell the bad capacitor by the bulge on the top.

At this point you can buy the new capacitor at a local t.v. repair shop for just a couple bucks or likely take the board to them and they should be able to fix it for 10-20 bucks. Unless you are decent with soldering I suggest taking the board in and having them replace the bad capacitor.
You will need a 2200µF 10V capacitor. I may suggest bumping to 2200µF 13-16V capacitor just so you don't have the same problem again.

Once the bad capacitor is replaced, replace the board and turn on the t.v. You should be good to go.

Posted on Feb 10, 2009

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Yes your power supply is bad if your TV is turning off you can try to repair it or replace it. It also sounds from your description that your t-con board since you are getting a grey screen..... You can get replacement parts for this TV at

Posted on Nov 26, 2011


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