when you say "dead," do you mean "bright?" i.e. you have a red/green/blue sub-pixel always on? if so, you can't fix it. An LCD sub-pixel is actually "on" or bright when it is not powered; powering the ...
I have owned quite the plethora of electronics in my life. A commonality between most of these devices' screens is frozen or dead pixels. This is probably the most annoying thing about buying new ...