QUOTE(MeToo @ Jun 19 2009, 11:38 AM)
Dead Pixel = White on black screen
Red dot = stuck pixel (you better with with Dell what is their policy on that, Samsung have a 1:1 exchange for a single red dot within 7 days).
Correct me if I'm wrong, you cant see the red dot under black page cause, to display black, all the pixel is on "ON" position. Hence any stuck pixel doesnt show up. Black screen test is to look for "Dead" pixle which will show up white.
Pls dont rub the area etc etc... it doesnt work. You migth come worse off and leave mark on the LCD screen...
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?