Question about LG 42PC3D 42 in. Plasma Television

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Tv lg blank screen



lg tv screen went blank, hear the tv no pitcher what is this

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  • Anonymous Mar 05, 2008

    No picture but there is sound. What could be the cause?

  • emco7896026 Feb 01, 2009

    picture is blank but there is sound

  • jguitar Feb 18, 2009

    Watching tv then picture went blank. No picture, no menu, Audio fine

    No noise just went blank.

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  • 109 Answers

Check oscilator crystal on main board, need scope to do that is a 50 mhz. hope this helps

Posted on Mar 28, 2008

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While watching the TV the screen went blank and there wasn't any sound. I've checked all the cables. I tried turning it off and back on but when I did this the power light flashes 27 times before...


The tv power supply board it is shorted and dead.That the board where the tv power a/c cord plug into it.Tries websites like Shojimmy.com,Ebay.com to buy a whole new refurbish tv power supply board for the replacement.

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http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

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1 Answer

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Yes you need to replace the board LG 6871QYH048B. The board has a short. Check the fuses and one of them should have no continuity
because it is open.

Replace that board and problem solved

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