Help Odd digitizer problem

[otnman]

Ok, so son drops phone and cracks the screen. Still works fine. Drops again and screen goes blank and cracks worse. The indicator led still flashes, but nothing on the screen. So I replace the digitizer with a new one. Fire it up and it works great! That was last night. This evening when he gets home from school the screen is nit working again...led still flashes. Can't get it to turn off. Take the phone apart again, disconnect and reconnect ribbon for the digitizer, still nothing different. Remove battery ribbon and power back on and it works great again! What gives? Am I doomed to tear the phone apart every night now?