Question about LG 50PK550 50 in. TV

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My LG Plasma 50PK550 shows 1 or 2 vertical lines, 1 pixel wide, with bad color : black, gray, white and blue are correctly displayed, but Red/Green colors are not rendered. I suspect a problem of Chroma signal connection between the video board and the panel, specifically on this 2 lines. Lines are close to the center, where it is the hotest.

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  • LG Master
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Your idea should be correct I assumes. If you wish to get more details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name/model number/IC used, in the search box at the top right of the display window.
Screen-shots to defective plasma screen is given in detail with fault causes. You can compare it to that of your TVs' and can make sure.

Posted on Oct 20, 2013

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Posted on Jan 02, 2017

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SOURCE: Vertical bar on Daewoo Plasma screen

YES YOU HAVE DRY JOINTS UNPLUG FROM POWER SUPPLY REMOVE THE BACK/ INSIDE YOU SHOULD SEE AT THE BOTTOM SEVERAL RIBENED CONECTORS FROM THE SCREEN ITSELF? UNDERNEATH YOU SHOULD BE ABLE TO SEE 2 OR 4 COMPONENTS CAREFULLY APPLY A HOT SOLDERING IRON AN SOLDER THE ONE THAT YOU ARE HAVEING PROBLEMS YOU SHOULD NOW HAVE FULL PICKTURE AGAINE ANY PROBS email me andymay2@msn.com

Posted on Mar 23, 2008

taran_2005
  • 10515 Answers

SOURCE: I have an LG plasma model# DU-42PY10X that seems

Hi,

This is a common problem on these sets. As the menu is fine, this is highly suggestive of an internal failure.you have a driver board failing if you would open the set and on the left side is the Y-sustain board there are two boards connected to the Y SUS board. The one on the top drives the top half of the picture and the one on the bottom drives the lower half of the picture open the ribbon cables make sure to clean it or Re solder if you see needed turn set on and test, sometimes cleaning this will fix problem sometimes re soldering will fix problem and last resort is, the board itself is bad.Unfortunately,you need to diagnose and inspect all the components before replacing any part.If you wish to repair it yourself, i could give you a link to buy the service manual and would upload a troubleshooting chart ( generic ) that would explain how you need to diagnose the fault when you open the TV.However, there is no quick fix. It has to be opened and tested and then diagnosed.

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Jan 18, 2011

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