WHile running to the bus stop oday, my Pandora fell from the hand, and it seems to boot, but the screen remains black. I dont have a TV out cable or a tv to connect and test it - nor do my friends around here. I tested whether I could get the screen working with battery, with AC and with both - it did not work. I dont know of a direct way to shut it down besides the battery out - but i did not manage to do anything. Shining a bright flashlight on the screen (that will show the screen even if just the backlight is broke and the screen itself is okey) does not reveal anything. How do I proceed? How long is the guarantee (on a serial numbered second hand pandora)?