been using my iPad mini2 for over a year with no problems. then the other day i pull it out of my pocket to discover all this black stuff leaking inside. i can even see cracks inside of it too. if i rub my ringer across the glass i can't feel anything. iPad still works fine. the leaking black stuff doesn't prevent me from touching and using iPad anywhere on screen. if i take a screenshot of something you don't see any of the black stuff. can this be repaired by replacing the screen and/or LCD?