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Hi, im working in a electronic shop but is still training. Im currently working on a 42inch lcd tv (Lg). Half the screen has picture and other half has stripes. When i twist the screen or tap on the edges lightly the lines go away. By the way its on the left side. I unscrewed the whole tv, and made sure the screen is tight and closed it up again. Still the same. Please help as the tv has to go to the client today. Many thanx.

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  • Master
  • 794 Answers

No need to go into panic mode. Since you work in an electronics repair shop- I'm sure they have repair manuals for LCDs. Review and apply the troubleshooting steps required to diagnose the problem you presented to this forum. In absence of any manuals, call the manufacturer's tech support hotline for repairmen or technician's- they'll guide you in repairing the problem. And certainly there is no shame in going to your boss and explaining your inability to fix the problem; after all you are still in training and no one would or should expect you to be ready to handle every problem that's put on your work bench.
This is all part of the learning curve- you'll gain the admiration and respect of your co-workers and boss for doing so. Don't try to bluff your way around it; who knows, this may also be a test of character and honesty.

Posted on Nov 26, 2013

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snakehead
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SOURCE: Half Screen has colored lines, Half screen is working ok

there is a defected capacitor in the vertical circuit trouble shoot and replace. or if the vertical circuit is separate then replace the whole board.good luck

Posted on Jul 25, 2008

MNfisherman
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SOURCE: LG 42

One of your system boards is failing. Possibly the "Y" convergeance board. The LCD Capacitors will most likely have to be replaced.

Posted on May 05, 2009

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SOURCE: I have an LG 42" LCD tv with blurred image on half the screen

lg 42 in lcd tv power button blinks nine times before staying on and has sound but no picture

Posted on Feb 05, 2010

  • 1 Answer

SOURCE: Vertical colored lines on left half of screen.

I had this problem on a 37" Viewsonic LCD. Pulled it apart and through a process of elimination, I traced the problem back to a small board with several flat white ribbon cables coming out of it. The board was near the top center of the screen and under a ton of other equipment requiring almost a total disassembly.

This small board was clean but I noticed one of the rubber standoffs had slipped down and was making contact with one of the outputs running to the LCD. It also happened to be the output running to the section of the screen with the problem.

I postulated that the sticky glue on the rubber standoff may have just enough conductivity to cause a problem. Moved it so that it was no longer touching anything electrical and then reassembled the TV.

Afterwards, I turned it on and was pleased to see the problem has gone away! If you're having the vertical line problem, then maybe this could be your problem too, especially if you have a Viewsonic since it could be a manufacturing defect.

Posted on Mar 22, 2010

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SOURCE: when my LG 42inch LCD tv is off for a while and

This problems it is the causes by the board that call the T-CON decoders board,this board sit at the bottom in the middle of the LCD screen panel.This T-CON decoders board is started dying to causes these problems or the fibers opotic cable connections is loses or frail damges to causes slightly signal tranmittion from the T-CON decoder board to the LCD screen panel.Just used the tv,when the problems is there for good.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish T-CON decoders board for the replacement.

Posted on Jan 27, 2011

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If you are "Serious" about fixing I'd find a TV repair Forum.
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https://www.walmart.com/browse/electronics/32-inch-tvs/3944_1060825_2489948_7156390
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