Top 20 LG DU-42PX12XC 42 in. Plasma HDTV - Page 6 Questions & Answers


If it's new you should be under warranty.

If not, you need to replace the Power Control Board 6871qch038a

My Plasma is a VIZIO P42HD but all the components are LG.

Spoke with PartStore.com, rep stated 6871QCH038C (038C) is the superceded replacement for the defective prone OEM 6871QCH038A (038A). They and others offer the 6781QCH060Q (060Q) for $50 - $100 more. I opted for the 038C, but I was concerned about the title of the part which states "HAND INSERT"... PartStore.com rep stated it is in fact a board and there is no soldering needed, just "plug and play". DONE, paid only $120.95 + next day shipping for $29.95.

Since I took the TV apart before, it was a breeze and took about 2 hours, start to finish.

Important note, remember to remove the two 1" square spunge type heat sinks/pads the new board needs those for a proper installation and protection of the certain component.

Also you need two small zip ties to replace the ones you are going to clip off.

Added Bonus, the new board fixed other issues:

1. At times I would get a squeegly red line go across the screen. I thought it was the source (cable) but it is gone now.

2. Screen Shift, when I use the XBox for Games or DVD/HDVD the screen would shift. Very annoying, prior to swap out, recently the screen started to shift watching cable. Now it is no-longer an issue.

I am really pleased with my DIY repair and wanted to share.

The damn Vizio Out of Warranty Service wanted $360 for a service call which included the part for $125 plus they take my bad board for exchange.

6871QCH038C $120.95 http://www.partstore.com/Part/LG+Electronics+Incorporated/LG+Electronics%2fZenit h/6871QCH038C/New.aspx
Over Night Shipping #29.95
DIY FREE biggrin.gif

LG DU-42PX12XC... | 576 views | 0 helpful votes


I have a Vizio P42HD but once it is taken apart, it is all LG components.

It is your Power Control Board 6871qch038a. The solders are so small it isn't worth trying to re-solder.

Spoke with PartStore.com, rep stated 6871QCH038C (038C) is the superceded replacement for the defective prone OEM 6871QCH038A (038A). They and others offer the 6781QCH060Q (060Q) for $50 - $100 more. I opted for the 038C, but I was concerned about the title of the part which states "HAND INSERT"... PartStore.com rep stated it is in fact a board and there is no soldering needed, just "plug and play". DONE, paid only $120.95 + next day shipping for $29.95.

Since I took the TV apart before, it was a breeze and took about 2 hours, start to finish.

Important note, remember to remove the two 1" square spunge type heat sinks/pads the new board needs those for a proper installation and protection of the certain component.

Also you need two small zip ties to replace the ones you are going to clip off.

Added Bonus, the new board fixed other issues:

1. At times I would get a squeegly red line go across the screen. I thought it was the source (cable) but it is gone now.

2. Screen Shift, when I use the XBox for Games or DVD/HDVD the screen would shift. Very annoying, prior to swap out, recently the screen started to shift watching cable. Now it is no-longer an issue.

I am really pleased with my DIY repair and wanted to share.

The damn Vizio Out of Warranty Service wanted $360 for a service call which included the part for $125 plus they take my bad board for exchange.

6871QCH038C $120.95 http://www.partstore.com/Part/LG+Electronics+Incorporated/LG+Electronics%2fZenit h/6871QCH038C/New.aspx
Over Night Shipping #29.95
DIY FREE biggrin.gif

LG DU-42PX12XC... | 394 views | 0 helpful votes


Well if it's old it can be burnt in from something being on there for too long. The inside of the T.V.'s have plasma gases and they can run out uncontrollably too. Sorry, but you can't do anything.

LG DU-42PX12XC... | 43 views | 0 helpful votes


6781QCH038C is the correct replacement.

There is another replacement part for LG's ending with 060Q. Electronia-USA.com stated it may not work with LG's but does work for Vizio's

Yes, a non pro can do this repair.

LG DU-42PX12XC... | 245 views | 0 helpful votes


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

LG DU-42PX12XC... | 1,584 views | 4 helpful votes


I'm not an expert, but I have determined that the vertical bars that are often red, sometimes blue ... and sometimes both ... are related to a bad control board. I've also read that a common fix is to buy a repair kit with includes the ysus, zsus and control boards ... all replaced together. My experience was that after a month or two with the 1.5" wide stripes, that you eventually loose the entire picture and have sound only. MIne comes back, but won't stay working for very long and the stripes are always there (buy used to fade and flicker sometimes). I'm planning on replacing the control board.

LG DU-42PX12XC... | 659 views | 1 helpful votes


try painting on screen to create a picture

LG DU-42PX12XC... | 167 views | 0 helpful votes


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
Classtorations.com

LG DU-42PX12XC... | 345 views | 0 helpful votes


This can be on the matrix drive board, or the display assembly itself. It is possible to also have a defect in the address decoding area that will cause this.

The procedure is to swap out the suspect boards to determine where the fault is, leave the working boards in the set, and then follow up any necessary calibrations that are necessary.

Jerry G.



LG DU-42PX12XC... | 632 views | 1 helpful votes


Sounds like your Y-Z sustain boards. You will need to get pro help and you should be looking at a repair or 400.00
Classtorations.com

LG DU-42PX12XC... | 275 views | 0 helpful votes


I have that part. owuzzi50@msn.com

LG DU-42PX12XC... | 32 views | 0 helpful votes


Your set is servicable with proper troubleshooting. Normaly, the defective boards are swapped out to service these sets. This fault can be in the address decoder, or the display drive boards. It is also possible that the failure is in the display assembly itself.

My preference would be to give the set to the authorised service rep to have an estimate to deterine if the set is worth to service.

Jerry G.

LG DU-42PX12XC... | 94 views | 0 helpful votes


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.

LG DU-42PX12XC... | 4,437 views | 3 helpful votes


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.

LG DU-42PX12XC... | 1,977 views | 3 helpful votes


Without troubleshooting the set, I will take a sort of guess at what I think the fault may be.

This may be a fault in the video processor, most likely dealing with the RAM, or part of clocking drive for the modulation decoding that is driving the display panel.

The fix is board replacement.

Jerry G.

LG DU-42PX12XC... | 92 views | 0 helpful votes


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

LG DU-42PX12XC... | 180 views | 0 helpful votes


There are replacement controller boards you can buy. I found that 038A is replaced by 060Q ... same starting part number. Try this place: http://www.electronica-usa.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=EU&Category_Code=PLA

You may find a better price elsewhere on the internet or locally.

LG DU-42PX12XC... | 40 views | 0 helpful votes


sounds like bad y driver, if so very very repairable

LG DU-42PX12XC... | 164 views | 0 helpful votes


unplug for twenty minutes

LG DU-42PX12XC... | 68 views | 0 helpful votes


Try to replace the YSUS board and/or ZSUS board.

LG DU-42PX12XC... | 102 views | 0 helpful votes

Not finding what you are looking for?
LG DU-42PX12XC 42 in. Plasma HDTV Logo

Popular Tags

207 questions posted

Ask a Question

Usually answered in minutes!

Top LG Televison & Video Experts

Ekse

Level 3 Expert

13434 Answers

The Knight
The Knight

Level 3 Expert

76100 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18429 Answers

Are you a LG Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

LG Televison & Video

  • LG Televison & Video

Most Popular Question

lg flat panel plasma red line

  • Televison & Video
Loading...