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“Dead” pixels—defective pixels on a liquid crystal display (LCD) that are not performing as expected. Variations of dead pixels: dark dot, bright dot and partial sub-pixel defects.

Below you may see examples of dead-pixels:

Clean the screen gently with a soft cloth and click “Start test”. Press “F11” key if your browser window doesn’t switch to full screen automatically. Press “Esc” key to exit fullscreen mode and to stop test and return to this page. Click left mouse button or press “space” to change test-screen.

Pixels are very small so you have to look carefully all test screens. Let your eyes accommodate to screen brightness.

This is a simple test designed to make it easier to detect LCD «dead pixels» (pixels that are either stuck-ON or stuck-OFF) by displaying a series of solid background color pages for contrast.

How to test:

  1. Put your webbrowser in fullscreen mode (Usually the F11 key)
  2. Use Alt+RightArrow to go to the next background page, and Alt+LeftArrow to go back.
    OR
    Use the links below for specific test pages, and use Alt+LeftArrow to go back. You can also manually open each of the pages in new windows/tabs 1 and close them (Ctrl+W) to get back:
    BlackWhiteRedGreenBlue
  1. If using FireFox, it’s convenient to open all the color background pages in new tabs (by Ctrl+LeftMouseButton clicking the links), and then switch between them using Ctrl+PageDown and Ctrl+PageUp.

Check if all your pixels are O.K

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Times have changed, and now nearly everybody has a TFT at home. They are pretty enough and really good, but it is said that some pixels go off.

TFT screens have thousands of pixels, on a 1024×768 monitor, there are nearly 2.4 million cells (1024x768x3 = 2,359,296).

Having in account that figure, we realize that it is really difficult that all of them runs properly.

Death Pixel Tester arrives to your PC to check them. It will color your screen to allow you to know if it is correct or not.

It is really simple but effective, the process is easy, DPT put the screen in the basic colors (red,green,blue) and all on (white) and all off (black). Simply select a color then closely inspect your monitor in each of the primary colors checking for pixels that are not operating as expected.

From now on you will know if your TFT is ok or not.

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