Hi! I have a problem with my screen on my macbook pro 15 LED backlight (santa rosa). It started one month ago. First the screen went black for a few seconds the the blackouts became longer, but the computer worked normaly. The it jst went black for good. Bt if I let the computer on for a few hours I could see an image for less then a second every now and then. When I push the buttons for the screen brightness I can see very weak changes of greyness-it is still black. After I thought it was the display, I ordered a new one, instaled it and the image was back, but only for an hour. After that it again dissapered. I conected my projector onto it to watch a movie, because it was still good for it even without the screen working. The output works fine. After watching a movie I could see the screen coming back and now it is working for half an hour, so I am fast writing this message befor it goes black again. What could be wrong? Thanks for any help.