my father in laws ipad has a black screen after he done an update through iTunes. I have tried pressing the sleep/wake button countless times, tried it connected to iTunes. it seems to communicate with iTunes and restores etc. you can see the backlight flashing on and off. now and again you see a part of the screen that has lots of different coloured lines. like a damaged lcd. the screens aint damaged. its got corrupt somehow. does anyone have any ideas. he just bought this second hand about 2 weeks ago.