Original post by: David ,
Chances are that the problem is being caused by the soldering. The soldering you need to do to make sure this works correctly cannot be done with the stuff you buy at radio shack. Sure some people have gotten that to work, but the ICC problem is a definite culprit. Even redoing it you are at risk of having problems still. Such as the backlight not working. Have you plugged this iPad into itunes to see if it is recognized? If so, you need to check and see if the response-lessness is actually the backlight not functioning correctly. Also, unplug everything(including the battery). Then in this order plug back in: Digi assembly, LCD, Battery. Attempt a hard reset. Can you take a close up picture of the soldering job you did and post it?