I have a 4G 20g iPod clickwheel. Yesterday while listening to it the screen went blank at some point. I can hear the clickwheel working, and can play music (whatever comes up after clicking around a bit). I have reset numerous times with the iPod plugged directly into the wall and plugged via firewire into the computer. I just did a factory reset, and it is updating my iTunes library from scratch. Still no screen visible. Anyone have any ideas? One year purchase anniversary is August 18th. Thanks in advance!!!