I have same problem in that i got water on the cracked part of the screen. It still turns on and is functional but the touch sensitivity is broken, my solution was to get a new ipad and transfer a back up to it. The problem is for me to make the back up i would have to select the "Agree" notification that pops up when plugging into a computer. I can not do this due to the touch screen being broken. Is there a way to make a backup without having to get the computer to "trust" the device? Any help is greatly appreciated.