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How to Fix Dead / Stuck Pixels in LCD or TFT Monitors

by Shivaranjan on July 22, 2008


These days LCD or TFT monitors have become the mainstream displays that are shipped with computers. There are chances that you may end up with a Dead pixel or Stuck pixel in your LCD or TFT monitor. Before we go to the fixing part let us get know what is Dead pixel and Stuck Pixel.

What is Dead Pixel?

A dead pixel is a defective pixel that remains unlit.Dead pixels are usually best seen against a white background.

What is a Stuck Pixel?

A stuck pixel will usually be most visible against a black background, where it will appear red, green, blue, cyan, magenta, or yellow, although stuck red, green, or blue pixels are most common. Each pixel on an LC monitor is composed of three subpixels, one red, one green, and one blue, which produce the visible color of the pixel by their relative brightness. A stuck pixel results from a manufacturing defect, which leaves one or more of these sub-pixels permanently turned on or off.

What is a Hot Pixel?

A permanently lit (white) pixel is called a hot pixel. Hot pixels are usually best seen against a dark background.

Difference between Stuck and Dead Pixel?

Stuck pixels are often incorrectly referred to as dead pixels, which have a similar appearance. In a dead pixel, all three sub-pixels are permanently off, producing a permanently black pixel. Dead pixels can result from similar manufacturing anomalies as stuck pixels, but may also occur from a non-functioning transistor resulting in complete lack of power to the pixel. Dead pixels are much less likely to correct themselves over time.

Before you proceed with the steps make sure you have disabled monitor standby mode from Windows control and disable the screensaver mode.

Method 1:

1. Download UDPixel from here.

2. Install the software and run the application.


3. Now you can find out the Dead pixel by using the Dead pixel locater located in the left side of the screen. Once you have located the dead pixel, now choose the number and the size of the flashing area and flash time interval. Now the hit the start the button to start the flashing process.

4. Now depending upon the number of the flashing windows you will see the flashing pixels on your screen, move the flashing window or pixel to the area where dead pixels found in the step 3.

5. Run the flashing pixels or windows over the dead pixel for a couple of hours and now check if the dead pixel was fixed.

Method 2:

1. Head over to JScreenFix java applet launch webpage from here.

2. Launch JscreenFix java applet and you should see a window with multiple flashing pixels as shown below. Move the pixel fix screen to area that is affected by stuck pixel or dead pixel.


3. Leave the java applet running for around one hour and then check if the problem is corrected.

The same steps can be repeated from the website Dead Pixel Beta where you can similarly launch a java applet that flashes pixels which is similar to JScreenfix.


Also check out Killdeadpixel.com that also serves the same purpose.


In most of the cases your dead pixels should be fixed but if it does fix then you may have to try out the Pressure method or Tapping Method that most people use to fix it but it is a bit risky so do it at your own risk.

The pressure and tapping method work for some people in our case we ended up damaging the LCD monitor. Hence we don’t recommend this method.

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{ 2 comments… read them below or add one }

Cornel November 30, 2011 at 10:27 pm

Great tips. I have a dead subpixel which on a screen appear as red. I have checked the area with a magnifing glass and I saw a missing green subpixel. Now I am trying UDPixel and hopping for the best.

click the following website April 18, 2013 at 12:10 pm

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