QUOTE(kianwee @ Jun 19 2009, 12:07 PM)
I will do the honor to correct you, because you are all wrong.
1) Dead pixel doesn't show any color. It is pure black, because the pixel is off. It is dead. So your claim of dead pixel = white on black screen is misleading.
2) A stuck pixel happens when 3 sub-pixels (either red, green or blue, or could be a combination) is left lit on the screen. So a red stuck pixel will not be seen on a red screen. When you cycle to other color like green, the red subpixel which is stuck there will remain as red, so you can see a small red dot.
3) The rubbing technique works on some, it is one of the most popular technique to unstuck a stuck pixel. So if it doesn't work for you, doesn't mean it doesn't work for others. Do not make a conclusion based on your experience. Nobody ask you to rub using your razor blade, how will gently rubbing leave marks on a LCD screen?
Dead Pixel : Well, when the transistors of a pixel is dead, the result would be a white dot as lights would not be blocked from passing thru the RGB? Isnt this what we refer to as "Dead" pixel?
Such "stuck" fixing method generally doesnt work. And even when it does (sure there are claims it worked) most commented that the problem comes back. Also, the LCD is made of plastic, although it is coated with an anti-glare coating and is somewhat scratch resistance to a good degree. This surface is not however scratch proof. Even rubbing using a piece of cloth might produce abrasion on the screen.
The monitor in question is an UltraSharp series (?) Their replacement for that is ONE bright dots (or more ofcourse) or 6 dark dots. My advice would be to leave it in perfect order while asking for a new unit, why risk leaving physical deformities when you want to claim Dell??
QUOTE(xrossf1re @ Jun 19 2009, 12:13 PM)
Go wikipedia,search for dead pixel,understand it then only try to advice others la...

http://en.wikipedia.org/wiki/Dead_pixel this one ar bro? Aiya this is a forum, you got constructive things to say then post lah. Even if wrong atleats someone correct you and you learn. Oneliners....