I got a 17" Apple Studio Display from someone I know. When he was putting it back into its original box, he put the styrofoam upside down and I believe he pressed down hard on the screen in order to close the box. When i turned it on, there is a fingertip sized "bruise" on the screen, it actually looks like a black and blue mark on your skin! It is a darkened spot and when the screen goes black, it illuminates sort of yellowish in an irredescent way. Is this damaged beyond repair? Would heat help it? Are there any tests or things i can do to eliminate this bruise? It is about four inches in and two inches up from the bottom frame so it is very noticable.