Problem with my unit wasn't the screen, but it's the same story. I sent my 770 for repairing and after two weeks I got back different 770. It was broken too and next day I sent it back. It's been over three weeks since I last had my 770. Things break and this is why we have warranty, but I really must wonder do they have any quality check at place where they fix 770's. The unit they sent me was broken so many ways, that turning it on, trying wlan or only looking it should have told them It's not ready to return to customer.