Question about LG 42LG50 42 in. LCD HDTV

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Blue screen with error message

After a power surge my tv has a blue screen on 70 percent of the screen.On the blue screen there is an error [Exception By UiTask Task] there is a line of what looks like code going down the screen...I was told the main board needed to be replaced. I did that and im getting the same thing. i looked online and cant find a solution.

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  • Muhammad Apr 24, 2013

    Correction i replaced the Power Supply Board and I'm still getting the same problem

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6ya6ya
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SOURCE: Red lines on right hand side of the screen now no picture on right hand side!

I'm not an expert, but I have determined that the vertical bars that are often red, sometimes blue ... and sometimes both ... are related to a bad control board. I've also read that a common fix is to buy a repair kit with includes the ysus, zsus and control boards ... all replaced together. My experience was that after a month or two with the 1.5" wide stripes, that you eventually loose the entire picture and have sound only. MIne comes back, but won't stay working for very long and the stripes are always there (buy used to fade and flicker sometimes). I'm planning on replacing the control board.

Posted on Jul 17, 2008

mumma_1
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SOURCE: Screen color is blue

A blue screen normally comes on in AV or EXT mode, try changing the tv settings back on the controls in TV mode

I hopethis helps

Posted on Nov 20, 2008

  • 8 Answers

SOURCE: replace main board on LG 42LC7D-UB

not sure what you're referring to as a "main board", but heres the LCD Control Board for the TV

http://cgi.ebay.com/LG-42LC7D-UB-LCD-CONTROL-BOARD-6870C-0119A_W0QQitemZ150277759127QQcmdZViewItem

Posted on Mar 13, 2009

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SOURCE: HDMi cable hooked up, but I get an

you have to go to the input button on the remote and push HDMI

Posted on Apr 05, 2009

  • 1 Answer

SOURCE: Issue with LG Plasma tv model # DU-42PX12X

Another "same probelm"

My set has encountered this magical 50/50 split screen and it seems to be quite a problem since I am not the only one researching this issue. LG was of no use because of course it is just out of warranty. Any solutions on fixing this or am I out of money in buying a new plasma?

Posted on Nov 10, 2009

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