I've found a dead pixel (phosphor or whatever) on my brand new Nec FE950+ I didn't believe it at first, I've looked at crt monitors for ~10 years and I've never seen one before ! sigh View image ...

My Trinitron TV has a dead pixel, was there when I got it like 8 years ago. Doesn't bother me because I sit far enough away, but yes, you can get dead pixels on a crt.