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Why is the picture on my LG TV so dim?

I need help on my LG Plasma TV Model # 42PC3D-UD. The problem is sound is there but the screen fades out every deem hardly see. Do you know what should I try. Power supply all cap are good, Vs, Va 5v they are good

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  • 15 Answers

Sounds like the back light panel is going bad.

Posted on May 05, 2015

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Posted on Jan 02, 2017

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I have a LG 42pc3d-ud i can get green (power light) but know picture on tv (like power is off and have humming sound comming from back


From your description it sounds like your TV it's actually on you just can't see a picture. That is usually caused by your Zustain boards. The zustain boards are located on the left and teh right side of the TV. You can check the fuses to see if one of them is blown or you can leave it on and see if one of them does not heat up. You would have to replace the board. You can find part at www.interliquidparts.com

Jun 06, 2011 | LG 42PC3D 42 in. Plasma Television

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My LG modle #42pc3d-ud 47 inch plasma picture suddenly went out but can hear sound. What is the problem and is it worth fixing?


The problem is the Y-Sus PCB; You'll have to take the cover off and see the model # on the board (this board is on your left side as u take the cover off)

Aug 18, 2010 | LG 42PC3DC 42 in. Plasma HDTV

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White speckles on the plasma screen, initially very bad but tend to fade after tv is on for a while


This sounds like mal-discharge, where the refreshing of the picture content is leaving a trail. Contact your LG dealer as a software issue can remedy this which needs to be done by a service engineer.

Dec 21, 2009 | LG 42PC3D 42 in. Plasma Television

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