I had my screen replaced following a ding that cracked the screen. (Not by Apple though). Since the change, the keyboard/cover switch no longer works! Other symptoms include: 1. When keyboard/cover lock is active, power/sleep switch doesn't put ipad to sleep, I.e. It is deactivated. 2. When turning on, following the display of Apple logo, the screen goes blank, rather than going to 'swipe to open' screen. I have to tap home button to get to 'swipe to open' screen. Any suggestions as to what the problem(s) might be?