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Screen only display half of screen LG 42LF20FR

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4 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 208 Answers

SOURCE: Flat panel displays half screen, mirrored on bottom half of screen

Have several problems with either a bad LVDS cable from Main unit to the LCD controll bd. Sometimes the cable is just not connected properly. If you reseat this cable and the problem still exists you most likely have a bad LCD control bd.

Posted on Feb 03, 2008

gsalmen
  • 77 Answers

SOURCE: LG DU50px10/10c ; left half of the screen displays

the screen or the x or y screen supplys have failed. contact a servicer

Posted on Jul 10, 2009

SOURCE: LG 50" plasma PDP50X4 only shows top half of screen, sound and top half of screen work fine....Help!

That's a relatively easy one - you have either upper or lower Y-Sustain buffer board gone bad.

if the last chip of the upper buffer has failed you may get what you get, even that this is a relatively rare type of failure.

The same would happen if the lower buffer is bad although this is again somewhat rare for a failure for those boards.

Either way you need a new buffer board and I'd start with the lower if I were you.

I assume nobody has messed up with the TV because another possible explanation would be the two buffer boards were disconnected from each other.

The best is they are neither too expensive nor hard to replace.

Hope this helps!

Oh, here's a link with something more about those boards although I am not sure it would apply to your particular case...use it as a good educational resource, but don;t expect to have the exact problem described there:
http://blog.coppelltvrepair.com/2010/10/vertical-or-horizontal-color-lines-in.html

For more help please use www.coppelltvrepair.com/diagnose ..

Posted on Oct 01, 2012

Testimonial: "Thanks for that, I'll order both boards and just replace them in one hit, cheers - your a legend."

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