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Horizontal line of dead pixels across my screen

About every 4th pixel lights up almost all on the same horizontal line. Turn the tv off and back on and it will dissapear for a while then come back. Any ideas??

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Posted on Dec 12, 2007

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SOURCE: Black horizontal line 1 pixel high

Depends on what area the line is in the bottom half or top?

Posted on Mar 10, 2008

MaverickIT
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SOURCE: Black line (strip of pixels not working) horizontal across screen

If a whole line of pixels is dark, you've got a bad transistor in what's called a "Passive Matrix" display. For your future purchasing decisions, while an "Active Matrix" display costs a little more, it has individual transistors for each pixel, rather than one per row and column, so when a transistor goes bad, it only turns one pixel black rather than a whole row or column.

Posted on Sep 12, 2009

  • 1 Answer

SOURCE: horizontal lines on 42" vizio LCD

i have the same problem. any solution

Posted on Jul 13, 2011

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Unfortunately, repairs at the "pixel level" are not possible. The display is an "all or nothing" type of repair (I'm not talking about the back lights and support electronics - I'm *only* talking about the display screen). That means that the entire screen is replaced if there are to many dead pixels. (Most screens have dead pixels - manufacturers limit the number of dead pixels on a screen that can be assembled to a TV). If it the Quality Assurance people in the factory find a number of dead pixels that is less than a certain amount - it is "good" and ships. If it is more - it is scrapped.

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I have a 60 inch tv and i have white dots on the screen


that is what we call dead pixel, you can remove this by following the steps below.
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  2. Get yourself a damp cloth, so that you don't scratch your screen.
  3. Apply pressure to the area where the dead pixel is. Do not put pressure anywhere else, as this may make more dead pixels.
  4. While applying pressure, turn on your tv screen.
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My Panasonic plasma TV has suddenly developed a one pixel thick horizontal black line across the screen. It is not there when the TV is switched off.


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Horizontal lines across the screen


actually it is called a dead pixel. You can't fix it unless you will replace your LCD. Sorry for the bad news but it is for a fact. Hope I have answered your question

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1 Answer

Black line (strip of pixels not working) horizontal across screen


If a whole line of pixels is dark, you've got a bad transistor in what's called a "Passive Matrix" display. For your future purchasing decisions, while an "Active Matrix" display costs a little more, it has individual transistors for each pixel, rather than one per row and column, so when a transistor goes bad, it only turns one pixel black rather than a whole row or column.

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Visually, there is very little difference to the eye of the average consumer between 720p and 1080. However, 720p can deliver a slightly smoother-looking image, due to the fact that lines and pixels are displayed in a consecutive pattern, rather than in an alternate pattern.your tv is display format is 720p and blu ray is 1080p. what happen is it will be scaled into 720p. old tv set format is 480p 720p represents 1,280 pixels displayed across the screen horizontally and 720 pixels down the screen vertically. This arrangement yields 720 horizontal lines on the screen, which are, in turn, displayed progressively, or each line displayed following another. 1080p, on the other hand, represents 1,080 horizontal lines displayed sequentially. This means all lines are displayed during the same pass. 1080p is the highest quality HD display format. 480p represents 720 pixels displayed across the screen horizontally and 480 pixels down the screen vertically. This arrangement yields 480 horizontal lines on the screen, which are, in turn, displayed progressively, or each line displayed following another.

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