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

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LG flat panel plasma with red line

About two weeks ago my flat panel plasma tv developed an inch wide red line from top to bottom. Today it appeared on the left side. Now I have one on each side. Please help me. The tv is only a year old.

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  • hookie Nov 13, 2007

    Hi I have an LG LCD TV/RZ-17LZ40 which is 2 years old (manufactured October 2005) and has a red vertical line about an inch wide in the middle of the screen. I phoned and emailed LG customer services and all they offered was the telephone number of a local repair agent who wanted to charge me 35 quid just to look at it. Is this going to be an expensive problem or is there a chance it might cost less than 50 quid to sort out? Also, I think that a television should not develop faults after just 2 years use and am considering demanding that LG repair or replace it in line with the Consumer Protection Act. Has anyone tried this?



    Nicola

  • bsloe Dec 31, 2007

    Our Lg plasma tv which is 2 yr and 4mos developed a red vertcal line on the right side of the screen just yesterday. It disappeared twice the came back. is this something that can be fixed?

  • galberth Feb 11, 2008

    42" LG plasma has a 1/2" verticle RED line on right side. For the first few days it would come and go but now is permanent. The television is just 2 yrs. old.

  • chevy106 Apr 11, 2008

    I've got an LG with the same problem! Does anyone know which board is causing the issue? Is it something a user can replace if they have the part? Mine is a Model DU-42PX12XC.

  • Backbayzona May 02, 2008

    Same problem. My 42" LG Plasma is just over 2 years old and has a 1" red stipe doen the right side about 6" from the frame. Has LG done anything about this...?

  • Anonymous Jul 05, 2008

    A 1" bright red band from top to bottom started appearing on my LG CK-42PX01 plasma TV which goes on for a while and then off again and on again. My TV is just over 3 years old. Anyone with any advice?

  • Poonkl Jul 28, 2008

    My LG DU-42PX12X is about 3 years old and starting few days ago a red vertical bar of about 1 inch is appeared at the left hand side when the TV set is powered on. It went off and come back again.

  • Anonymous Aug 13, 2008

    Hello, I have the same problem but I have two lines on my right side....a vertical red and blue line appears on my screen and after reading all your comments I guess...is going to be the same board 6871QCH038A that I have to replace.

  • captmikep Aug 24, 2008

    I have red stripe on right side, about 2 inches thick from top to bottom

  • Anonymous Sep 09, 2008

    I have a blue and red line in my TV screen close to the corners

  • Anonymous Sep 21, 2008

    I too have a red bar running vertical on the left side if the tv, in all modes,i.e, cable and Direct TV.



    Lg about three years old 42 plasma. Cant' really afford to buy another set right now.



    Any extended warrenties or class action suite.

  • norflash4 Sep 26, 2008

    My 42 inch LG Plasma has a reddish orange stripe running up the left side of the screen. It is about 1 1/4 inches wide and about the same distance from the left of the screen.

  • Anonymous Oct 13, 2008

    Ours is also an LG with orange/red stripe down right side of screen. The size of the stripe does change...sometimes not there, sometimes thin stripe, sometimes thick. About a year old...no extended warranty of course.

  • jlapromeo Jan 12, 2009

    I have the same red 1 inch vertical line on the left side of the tv.  At times it is transparent, other times solid.? The TV is a 2001 model.

  • Anonymous Jan 14, 2009

    I have the same red (orange) line top to bottom. What does one do and what is the problem

  • Anonymous Mar 15, 2009

    same

  • lseries26 May 22, 2009

    I have a blue line on the right of my lg plasma

  • PDX Todd May 11, 2010

    My red stripe is on the left hand side of the panel.  Does anyone know if that means that I need to by the right hand board or the left hand board??

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I had the same problem and fixed it by replacing the control board. It's a little nerve wracking, but required only simple hand tools. If you'd like to see detailed pictures of the repair check out my blog.

http://greenrenovation.wordpress.com/du-42px12xc-repair/

Posted on Feb 04, 2009

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According to Electonia-USA.com the Upgraded Control Board (060Q & 038C) does not require a BIOS Flash to work, at lest for the Vizio's.

LG Manual stated vertical lines are a cause of defective Control Board (038A)

Posted on Dec 25, 2008

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I was able to hit the resistor packs with a little heat and it worked! I wish I could find the post that had the picture of the resistor packs in question, but looking at the 6871QCH038A its the resistors on the lower half of the board. You don't have to put the soldering gun next to the resistor packs, just as close as you can get to the solder points, then running the soldering gun down each side for about 2-3 seconds a side. Once I did that, I put the circuit board back in, reconnected it and turned on the TV and it worked! Whoever had that post with the pictures helped me out a LOT! Thanks!

Posted on Aug 03, 2008

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My LG 50" is not a year old and it is doing the same thing as all of these others. It is sooo aggravating. Now I have two thin red lines and one blue one in the middle from top to bottom on the right hand side. Do I really have to replace the control board??? This TV is so heavy.

Posted on Mar 26, 2012

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John sellers you are da man!!! I ordered the 38C Board from Parts.com ($130.75 shipped--received in 2 days) and followed your perfect instructions and pictures. It took me 1.5 hours (no problems) and the TV is like new! Thank you, thank you, thank you!!!

Posted on Feb 07, 2009

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I am working on a 42PX12XC and found that the latest replacement for the control board (038A) is the 060Q part, same beginning part # of 6871QCH ...

I found this module at tristatemodule, but they only had one left (so I ordered it). There are several other places only selling this module and sometimes even on ebay.

When is in question to me is whether the control board alone can be replaced, or if it would also be best to replace the ysus and zsus boards at the same time.

I don't know what generation panel this officially is, but I know for LG 7th gen panels, they sell a repair kit which is the ysus, zsus and control board ... for a fairly low (LG subsidized) price point when compared to buying the boards individually.

I'm hearing that the LG control boards should only be used in LG panels. I lot of other brands: i.e. samsung, vizio are using these same parts ... and they are failing a lot ... but the control board may not be swappable for non-LG set (or require a BIOS flash for the brand your using).

I will post back here if the control board (replacement) alone works on the LG panel mentioned above.

Posted on Jul 17, 2008

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Many LG Plasmas have 2 year warranties. I would find out if yours is one. it sounds like a possible panel which is really bad. At least it is a Scan/driver problem which will still cost hundreds. If your set does not have 2 years but is only a bit over a year call LG and yell real loud they will extend it.

Posted on May 23, 2007

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Hie,
All problems with vertical bar come from the circuit board 6871QCH038A. You find this board in rear of the tuner board.
This is explain by an user on this site if you look for solve problem DU-42PX12X with photo.
I get the same problem with vertical blue bar on the right side of my screen. The problem is in the little resistor. I try to repair by solder but it's verry little part and unable to resolve the problem. I buy an author board 6871QCH038A. Now, my plasma work verry well. I paie $188 CDN for this board.
Good Lock

Posted on Apr 11, 2008

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Http://greenrenovation.wordpress.com/du-42px12x-red-stripe-repair/

Try this link

Posted on Feb 09, 2010

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I am looking at an LG DU42PX12X that has the same problem. I tried the address that john sellers provided but it's not valid any longer. Anyone else have the info on where to get the logic board replacemtn procedure?

Posted on Dec 29, 2009

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Posted on Jan 02, 2017

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SOURCE: About two months ago my flat panel plasma tv

Most like likely, this is a panel issue and it will be too cost to fix.

Other things you can try, reseating the ribbon cables on the buffer boards located running across either the top or bottom or both. If that doesn't do it, replace those boards and still no luck. Panel is bad.

Posted on Feb 17, 2010

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