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

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Issue with LG Plasma tv model # DU-42PX12X

I was given a 42 inch plasma tv model # DU-42PX12X and I am sure it is a common problem with this tv but I just wanted to make sure before I replaced the board (6871QCH038A) I have a picture on the right side of the screen but the blacks and the shadows seem choppy and blueish and I have no picture on the left side of the screen. I have random white, blue, red, green, etc lines that run from the top of the screen down to the bottom.

I didnt wanna spend the money on the board without being sure. Thanks

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  • econners Jan 28, 2009

    Same thing with ours -- the left side of the screen has the colored lines while the right side is fine. Let me know if you receive any suggestions -- ours was a hand-me-down so I'm wondering whether it's worth fixing! Thanks!

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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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1 Answer

Red stripe down the left side about 1 inch thick.


This is a problem with your control board. For some reason, the resistors on this board become "Un-Soldered" I'm not sure how handy you are but this can be fixed. BE SURE TO EITHER DISCHARGE THE CAPACITORS, OR AVOID THEM ALL TOGETHER (Capacitors look like little cans.They have what looks like an "X" or a "+" on the top.) Capacitors can hold a charge for a long period of time. Here is a link on how to fix this issue. I hope this helps you.
http://greenrenovation.wordpress.com/du-42px12x-red-stripe-repair/

Jan 03, 2011 | LG DU-42PX12XC 42 in. Plasma HDTV

1 Answer

Today 12/16/2010 my HDTV 42 in plasma model 42px12x.41. made a "popping" sound in the back of the screen and the screen went black,( yet there is still sound and a couple of green and red light...


PLASMA TVS DONT HAVE INVERTER CIRCUITS. YOU MOST LIKELY HAVE A Y-SUSTAIN BOARD FAILURE. IT IS THE BOARD TO THE LEFT LOOKING FROM THE BACK. THE LARGE ALUMINUM HEAT SINK LOCATED ON THE BOARD AND THE PART SCREWED TO IT WILL BE THE DEFECTIVE PART.

Dec 17, 2010 | LG DU-42PX12XC 42 in. Plasma HDTV

1 Answer

LG DU42PX12X - red and pink vertical lines.


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/lg-du-42px12x-plasma-tv-fix.html

Jul 22, 2010 | LG DU-42PX12XC 42 in. Plasma HDTV

1 Answer

HD channels look terrible


You may not have the resolution set to hd even though you are on the channel. Confirm that you are using hd cable and your set is displaying 720p or greater. This will sometimes pop up on the screen when you tune to a hd channel. it sounds like you are on 480 i or p. good luck

May 04, 2010 | LG 42PX5D 42 in. Plasma HDTV

1 Answer

I have a LG Plasma 42 du-42PX12X/12XC, and when turn on is working perfect and after 15 min the the image no appeared more. If turn off and after 2 or more hours it work again very well, but after 15 min...


Hi,

It seems that some parts are having a problem by warming up the temp.
If you're a technician, try some coldspray on the capacitors of the power supply.

Cheers,
Gerard

Jan 30, 2009 | LG DU-42PX12XC 42 in. Plasma HDTV

1 Answer

LG DU-42PX12X Plasma, picture startes flashing then goes black after a few minutes


You need to get this tv service asap.i beleive that the problem is in the inverter board or yb board.


good luck

caypianan@yahoo.com

Oct 25, 2008 | LG 42PX5D 42 in. Plasma HDTV

1 Answer

Lost video on LG plasma big screen model DU-42PX12X


LG Plasmas and all plasmas have problems with the sustain boards. You can replace them with just a screw driver to remove back and boards.  Try tritronicsinc.com and andrewselectronics.com and search for Y and Z Sus boards.
They are not cheap and you may want to call a qualified servicer or deal with return cost if they don't work
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Jun 15, 2008 | LG DU-42PX12XC 42 in. Plasma HDTV

1 Answer

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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