Question about LG DU-42PX12XC 42 in. Plasma HDTV

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LG DU-42PX12X Verticle lines of various colors, and widths throughout the screen.

I have an LG DU-42PX12X. When powered on, it displays verticle lines of various colors, and widths throughout the screen. Here is a picture of what i am talking about:

http://i192.photobucket.com/albums/z266/Jamescoop/IMG_3235.jpg

Please let me know what I should do/can do to fix it--or at least figure out more about the problem.
Imran
smile4u@hotmail.com

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  • sudilos Jul 25, 2008

    Same problem, only mine is on one side. Goes away after half an hour for an hour then comes back. If I tweak the case it'll go away or come back or change colors. I heard it was the right side PCB that controls the left side half of the screen that is the problem. Does that sound true or what?

  • ruroos1 Sep 07, 2008

    same problem only on outer edge of screen

  • rayshim May 06, 2009

    I have the same problem of mutiple color vertical lines on the left side. What is the difference between 6871QCH038C and the 6871QCH038A? I read somewhere it is the 6870QCH003A.

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Check within you area for a reliable LG repair center. To fix the problem of the blue, red or green vertical line you just need to replace the control board PN 6871QCH038C. The part cost about $150.00 and a honest repair center should not beat you up to bad on the labor. Good luck and Good viewing.

Posted on Sep 10, 2008

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This problem is caused by a fouled control board 6871QCH038A. I swapped it out and BAM! problem solved!

Posted on Jan 14, 2009

  • JasonKoller Feb 18, 2011

    I know this post is old,
    But I had the same problem.
    I was able to fix it.
    Heres a write up I did on the "How To".
    I added pictures and diagrams too.http://jasonkoller.blogspot.com/2011/02/...

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Sorry to tell you your set has a defective panel and the cost to replace the panel is more than what the tv is worth. If this set is out of warranty it is pretty much shot. Panel is listing at a cost of about 2200 dollars. Sorry I know this is not what you wanted to hear.

Posted on Feb 06, 2008

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I know this post is old,
But I had the same problem.
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Heres a write up I did on the "How To".
I added pictures and diagrams too.
http://jasonkoller.blogspot.com/2011/02/lg-du-42px12x-plasma-tv-fix.html

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Another "same probelm"

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LG DU-42PX12X


Check the controller board, 6871QCH038A. This board is one layer deep into the assembly after the cover is removed. Gently lift the covering circuit board back plane to access.

To do this direct a blast of cold air unto the large chip in the center of the board. If the picture comes back on then you have found it. This means powering the TV while open and this means danger to the novice. Voltage can end your life when you become the circuit path.

Order Part number 6871QCH060Q as the suitable replacement part to this circuit board.

7060 State Road 84 #12
Fort Lauderdale, FL 33317
(800) 432-8542
Fax: (954) 723-9044

Jan 05, 2009 | LG DU-42PX12XC 42 in. Plasma HDTV

5 Answers

Were can I get this board 6871QCH038A


the actual problem are the solder balls under the chip it can be fixed easily by reworking it, we have done it in a few dozens tv so far with excellent results the usual problems are: red vertical lines , one half of the screen not working, color lines and it usually cost only the time to perform it.
azhdtv at 85040

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DU 42PX12X LG


What have you tested so far?

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Have sound, but only bright mostly yellow vertical lines on my LG DU-42PX12X .


Since I haven't heard back ,I am clearing this from my queue. Best of luck.

Apr 12, 2008 | LG DU-42PX12XC 42 in. Plasma HDTV

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Vertical lines all over...have pic


I had the same problem on my DU-42px12xc. Red, green , and blue lines vertically on the right side of the screen. I found a loose solder connection under the inputs board on a resistor. After re-soldering, everything was crystal. I'm happy I grabbed this tv before my work threw it out. Be very careful when soldering SMT components. Use proper equipment. I had to troubleshoot while the tv was on, so I was extremely careful not to short anything out.

I pulled the inputs board out to gain access to the "Y-axis" pins.
41d5250.jpg resistor located under the inputs
fd8bf0e.jpg9d002b6.jpg I started pushing on the resistors 'till the color lines started working correctly, and re-soldered the four resistors.

Jan 23, 2008 | LG DU-42PX12XC 42 in. Plasma HDTV

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