I see a lot of new LCD monitor buyers bragging they have no dead
pixels.
Mine doesn't.
It's hard to make an LCD panel without either an always-on pixel or one
that's dead. That means that somewhere o their screen, if you look
closely, one pixel never goes out, or one pixel never comes on. It's a
property of fully digital monitors; the more dense the monitor and
higher resolution it handles, the more likely it is to happen; yet the
less visible it will be to the user.
I think most manufacturers specify so many live and so many dead before
a screen is declared bad.
How can I tell or test for this?
Testing for always-on pixels is easy: Turn your screen to black; and a
live pixel will look like a small star.
Testing for dead pixels is a bit harder. Pick a program like word to
fill the screen with nothing but white, and look for tiny black dots.
