Just got a replacement for my Macbook Air. Last time it was a loose hinge problem. This time it look like I got the Dead pixels problems. Please see the attached files. They are some 2 dot (each side have 2 dots total for 4 dots) that appeared to be always white in the corner of both side of the screen. I boost my brightness to max and use black colour picture with Preview in full screen. Thanks for any advice.