原帖由： Brian ,
It's likely that the iPad will need to have the lcd cable reconnected. Sometimes smacking the back doesn't work. With the proper instructions And patience you can open the iPad and do this. Be sure to power the iPad off first though. Just hold the power button for about 5-10 seconds then swipe not the screen towards the top where slide to turn off would be. You should see the backlight dim slightly then turn off. Follow the ifixit guide to open an iPad 2, and you'll be good to go.