Hello to everyone! I am facing a problem with my new 27” Cinema Display. It seams that there is a tzzzzz sound, produced from the screen. The sound is constant and I can control it by changing the LED brightness. For example the sound is really weak at 65% of brightness. It goes to full volume at around 80% and again to a really weak sound at 98%. Outside these levels (from around 65% to 98% of LED brightness) the display is totally quite! No, tzzzzz sound or anything else! I can hear the sound mainly from the bottom and top right part of the display. It seams that the other part of the display is always quite at all brightness’s levels. I am guessing that in this part is and the logic board that probably creates the noise. The sound even in the highest peaks in not too loud at all, but the constant tzzzzzz is the thing that makes it really annoying. Sometimes that the rooms is totally quite I cannot even focus to my work! If there is sound in the room you can’t hear it. What I suppose to do? Do I have a problem with the display or it is a common thing in all the new cinema displays? Do I have to call Apple for a display replacement? Any suggestions? Anyone with a 27” Cinema Display can here the same effect? Thanks for your time… I will really appreciate and answer. Otherwise I am really amazed from the display! Really bright, very good speakers (considering that is a display), nice dimensions and amazing design and picture!!!