Today when I started my media center I came across 4 dead pixels in the center left of the image. The projector is a LED DLP by Benq without warranty . The 4 pixels are in the form of a tetris piece like this (the green piece).

Is there any chance to recover the dead DLP pixels just the way you recover a LCD pixel. Can you give me some tips?

I will post pictures when I get back home.

Extra info: 3 pixels are dead black and one is green.