Discover Hot Pixels on an LCD Screen with Dead PixelBuddy

Posted by Matthew Brodsky

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That pesky Tux penguin continues to offer a stiff wing to its biggest competitor Microsoft, as it gains confidence with computer users, and steadily grows in market share. Indeed the Linux Penguin has waddled into almost 80 percent of today's companies, and can be found on web servers, network monitoring systems, desktops, firewalls, notebook computers, you name it.

You powerup your brand new desktop replacement laptop, and settle down with a smug and contentedsigh. You haven't felt this good since "Savage Garden" announcedthey were splitting up.

A 100 GB hard drive, top of the range processor,and a gorgeous 17 inch widescreen display, this notebook computeris beautiful, and so it should be - You just shelled out the bestpart of three grand for this puppy.....But wait.....You see a fewblack spots on the display! - Are these just harmless specks ofdust, or is your laptop screen suffering from infamous "Dead Pixel" syndrome?

A dead pixel (or hot pixel) is a pixel that remains unlit on aLiquid Crystal Display (LCD) screen, or black, when they shouldbe displaying a color. Webopedia describe this better:

".....All pixels on an LCD display are made from threeseparate subpixels, one red, one green and one blue-that whencombined form the colors that the users see on the monitor. Adead pixel occurs when the transistor that activates the amountof light that shows through all three subpixels malfunctions andresults in a permanently black pixel....."

So how do you know whether your notebook screen has dead pixels,or if it simply needs cleaning with water and a soft lint freecloth?

That's where your friendly "Dead Pixel Buddy" comes in.

The resourceful chaps over at Laptop Showcase, have created freesoftware to test your LCD screen for hot pixels.

This program runs through the red, green and blue colours onyour LCD screen in turn and checks for pixels that do notmatch.

Check out - Dead Pixel Buddy

if you find more than a few, or discover one right in the centerof your display, perhaps then it's time to contact yournotebook's manufacturer and discover their dead pixel policy.

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