Question about LG 42PX5D 42 in. Plasma HDTV

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DU 42PX12X LG

EVERY THING WORKS BUT GOT NO PICTURE THE SCREEN IS ALL BLACK IT DOES HAS SOUND AND YOU CAN CHANGE CHANELS

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  • Anonymous Apr 01, 2014

    model# DU-42px12x
    chas# af-044a
    serial# 512RMEN032492
    manufactured December 2005

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Having the same problem. an authorized Lg service center is at a loss. LG is not helpful at all. Now worried that it may not be fixed. Let me know what you have found. aldinger@sco.edu

Posted on Jun 25, 2008

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  • LG Master
  • 1,779 Answers

What have you tested so far?

Posted on Jun 20, 2008

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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

While checking Vscan voltages on my LG du-42px12x picture died.


I have the same problem the pic went out but have sound. where do i go to get the Yboard? do i need a special number off of it or something? I took it to repair shop and he said it would be like 500 dollarss to repair. but i see all kind of yboards on ebay for like 150?? how do I know what one to buy?

Mar 15, 2010 | LG DU-42PX12XC 42 in. Plasma HDTV

1 Answer

To make a long story short originally bought the LG du-42px12x with a bad ysus board(no picture just sound) replaced the ysus now the picture and sound work great but there are colorful dots all over the...


Sounds like the y sus was blown out but what cause it. Were you careful when you were checking voltages? As long as you didn't short 2 components together, your y sus should be fine. Unless the y buffer up and/or down blew them out. Even the panel could blow it.

Basically you need a scope to adjust the ramps and everything. You can adjust VA and VS with a meter. If you don't have access to a scope, then just start changing the ramps etc by eye. It might take a little bit to get but eventually you'll get it.

Mar 13, 2010 | LG DU-42PX12XC 42 in. Plasma HDTV

2 Answers

My TV Screen just turned off, but I hear the sound, have no menu.


MINE DID THE SAME THING ABOUT AN HOUR AGO. I UNPLUGGED THE SKY BOX FOR ABOUT 10 MINS PLUGGED IT IN AGAIN IT WAS FINE

Jan 31, 2010 | LG DU-42PX12XC 42 in. Plasma HDTV

1 Answer

Issue with LG Plasma tv model # DU-42PX12X


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?

Jan 27, 2009 | LG DU-42PX12XC 42 in. Plasma HDTV

1 Answer

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

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

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

3 Answers

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


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.

Feb 06, 2008 | LG DU-42PX12XC 42 in. Plasma HDTV

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