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Sharp Aquos 52 inch LCD devolped a thin black horizontal line the goes 80% across the screen about 2/3 up from the bottom. Looks like a telephone wire when there are outdoor sceens.

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You have a bad t-con board, the most common cause of this problem. It is the LCD controller which is responsible for producing an image on the screen. Replacing it should resolve the issue and component level repair is not possible as the board is full of solid state electronics. The board is relatively inexpensive and should cost you about 125$. It is easy to replace as well if you have the basic know how of electronics(what not to touch, how to remove connectors etc.,) If you want to do it yourself then let me know and I will see you through this.
PS: In rare cases this can also be caused by a faulty panel which I hope is not the case with your set.

Posted on Oct 05, 2010

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Horizontal line about 1 from bottom of picture


The t con board or LCD panel of the tv is faulty. Can confirm by replacing the t con board.
If you wish to get some details; check the site linked here. Pull up older posts.
http://electro-medical.blogspot.com/

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When tv is turned on you get poicture and sound but there are broken horizontal lines from top to bottom of screen. this occurs on all hdmi inputsincluding roku and dvd player.


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1 Answer

My 42 in phillips LCD flat seen has a black horizontal line toward the bottom how can I fix this.


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Dec 20, 2015 | Televison & Video

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2 days ago, a narrow black horizontal line appeared in the middle of the screen.


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1 Answer

My 52 inch sharp aquos has green and black vertical lines across the entire screen


Try different source like VCR, DVD, or satellite to see if it is the source thats bad.  Check to see all your connections are on good and tight.  If still no luck, then your tele is fu.k.d and you got bad LCD crystals or faulty inverter.  Take the thing back to the store for exchange or refund if your within your 30 day window.  Call the manufacturer if your within your 1 year window.

Oct 30, 2009 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

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Black horizontal line, red parallel vertical lines


REPLACED LCD PANEL
Manufacturer Sharp Part Number RF-R1LK420D3LF2 Description 42" WIDE LCD PNL -

Sep 28, 2009 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

1 Answer

Thin line across the screen


I'm guessing that this is a CRT based TV, not an LCD. That being said, the problem is a failure of the vertical circuit. Usually this is a small flat IC (LA7837 or similar). Try resoldering the pins if you can first. If that fails to resolve the problem, replace the IC. Please be aware that there are potentially dangerous high voltages present even when unplugged.

Keep us posted.
Dan

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5 Answers

Line in middle of LCD screen


I too had a black line horizontally across the screen (on a 52" d62). It was brand new and was as if the screen had been "pinched" at the end of the line and it radiated outward (in my case, the "pinch" was at the extreme left and line went out to the right, like a crack).

Mine was a factory defect (right out of the box) and was replaced (2 yr now and no issues). This line of yours may have been there from the start and maybe you just didn't notice it?? Not a slam, just an observation.

Feb 17, 2008 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

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