My screen has gone black and even though my phone still works nothing is coming up on the screen. This usually resolves itself if I turn my phone off for a few hours but it now has been like this for four days.
As I see, it is not your screen problem, it caused by the flex cable, you can find a replacement from here: http://www.ownta.com/wholesale-dropship-cellphone-spare-parts/
And then, try to repair it by yourself.
david, August 2009
Try taking the battery out for a few minutes, otherwise the firmware may need flashing. If the handset is still under warranty you should be able to get it done for free.