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There's a thick dark line across my tv I checked the tcon cable it looks good What's your serlution

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

Posted on Dec 06, 2016

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Posted on Jan 02, 2017

  • 8 Answers

SOURCE: Westinghouse 32" LCD TV

It seems your pixelsare burning out. contact the NY Service Center for Westinghouse. web is www.asnyonine.com

Posted on Jun 30, 2008

RehanZafar
  • 31 Answers

SOURCE: Dark lines appearing across my lcd tv

This is symptom of LCD Faulty. Please note down cost of LCD is much high. In my suggestion
you change or purchase new TV

Posted on Nov 12, 2008

  • 4 Answers

SOURCE: Getting Pulsating lines across screen

I have 2 horizontal lines that roll up my screen about a foot apart
i have had 2 different tv repair men tell me it is a CABLE GROUNDING problem
you should call the cable company (if you have regular cable) and supposedly they are aware of this type of problem and can install a filter at the main cable in box and hopefully this will work for you

Posted on Dec 09, 2008

  • 1779 Answers

SOURCE: tv lcd screen got knocked know a red line and a dark patch is getting bigger across screen

You have damaged the LCD Display, the cost of those are close to the cost of a new set. One day the manufacturers will put a safety screen on the front like the older projection sets had to protect those screens. When I sell a lcd set I always recommend to the customer to have a piece of Plexiglas installed over the front, especially if it's for the kids room. Of coarse it's a DIY project.

Posted on May 31, 2009

  • 304 Answers

SOURCE: my smamsung lcd tv has thick horizontal lines

You have what we call 60 Cycle Hum Bar. You also might have audio hum too. The problem is a grounding issue either coming from the source such as a Cable Box or a Sat box. More often this occurs with cable boxes. First unplug the source box from the tv completely. You will find that the Lines have disappeared. Next connect a Coax cable coming from the wall bypassing the Box to the RF input on the tv. If you still have the Lines, then the problem is with the Cable signal not being correctly grounded and you need to call the Cable co.. The Cable box can also be causing this as well. If all of this does not work then try using another set of Component cables as they can cause the same issue.

Posted on Jul 16, 2009

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Vizio 37 inch TV has blue line across top of screen when I turn on after a half hour it grows and TV works good till I turn it off for more then a hour any suggestions


The TCON board or the LCD panel is faulty. Can confirm by replacing the TCON 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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Vertical dark lines across screen and flickering double images


The tcon boar or the LCD panel is faulty. Can confirm by replacing the TCON 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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Dark screen problem


The tcon Board or the LCD panel is faulty. You have to replace the Tcon Board to confirm whether it was Tcon or the LCD panel.
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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HD TV what would cause a dark gray vertical line in the middle


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

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1 Answer

Turn on tv ad see vertical colored lines with thick black line i middle


Hi,
If you are a tech or know something about lcd tvs, lvds connector from main board to Tcon board needs to be cleaned. Connector and flat cables from Tcon to lcd panel are also to be cleaned. Good luck

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Samsung TV Screen faulty


t con board failed if its half and half. can also be a lose cable on the screen to the tcon board from the lcd screen side. Tcon is in the middle off the screen on the back.

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I have a LG 42ld450 and half of the screen looks funny. When I first turn it on u can see one thick line and one thin line on left side.


that could becaused by the LVDS cable or the Tcon Chances are its the Tcon y7ou can get free tech assistance and replacemnent parts from www.tvrepairworld.com

Mar 05, 2012 | LG Televison & Video

1 Answer

Dark horizontal line scrolling up from bottom of screen


if you are using a cable box .. then disconnect everything that is feeding signals into the tv ... then get a signal from some other source (like off the air antenna or video camera) ... if the tv still has the dark lines then you have a bad primary filter capacitor in its power supply .. if it works ok off the air and only does it when the cable box is hooked up .. then the cable box has an open primary filter capacitor . ... the dark horizontal bars you see is ripple from the rectified AC power that is not properly filtered ... if the TVs verticle scan rate is 60 hz and the full wave rectified AC amounts to 120 hz ripple then you will see two dark bars across the picture ... since the two signals are not syncronized then they will slip in phase with respect to each other .. thus the constantly moving pattern ..

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1 Answer

No picture just a blue line across and its not the cable


You may take a strong flashlight and place it against the dark areas of the screen and look around the edge of the light. If you can see an image moving around, it is still being 'displayed' on the entire screen.
If its still there, it looks like an Inverter/CCFT problem. If the image is 'gone' or compressed into a single 'line' it may be the LCD controller (TCON) with a 'heat' or intermittent problem.
You may try a fan blowing on the vents on the TV to see it runs longer without going bad.

Feb 23, 2009 | Insignia IS-LCDTV32 32 in. Television

1 Answer

Lines across the screen


the dark lines could be what is called hum bars these are caused by ground differences between cable and your AC ground. check to see if these lines appear using a dvd and removing the cable from the cable box. if the lines disappear then call the cable company and your electricain. in the mean time you can use a plug adaptor that is the 2 prong (ground less) until you can have the problem fixed. but don't use the adaptor as a fix, for your TV is a computer and needs proper grounds.

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