Whoops, sorry for not replying! The video didn't work, so I tried to do the pixel massage.
But, as soon as I applied a little bit of pressure the screen made a little popping noise (not very loud or high pitched, sounded more like something wasn't screwed down tightly).
I also noticed the monitor looks kind of wavy when I look at it from the side, I never noticed this when looking directly at the screen.
Would pictures be helpful?