Question about LG 42PX5D 42 in. Plasma HDTV

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HD channels look terrible

Model DU-42PX12X/12XC

My TV on this model looks terrible on the HD channels. I can't tell the difference between the regular channels and the HD channels. I have the 50" LG Plasma HDTV in my basement and there is a significant difference between the normal channels and the HD channels. What can the problem be with the 42" model?

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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

Posted on May 04, 2010

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Posted on Jan 02, 2017

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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?

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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

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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.
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Classtorations.com

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You may have to refer to the instruction manual for details.

There should be in the menu set-up an option to set the aspect ratio for the different broadcast modes. Normaly, when viewing a 4:3 picture on an HD 16:9 set, the sides will be cut off, otherwise the picture will be stretched or compensated.

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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.

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