Okay so my iPad was dropped on the floor, the screen went black but when I press the lock button it showed a little light, I found a solution [http://www.ifixit.com/Answers/View/81848/My+Ipad+screen+not+working+please+help+me|here], I smacked the iPad and the screen turned on again, but the screen has wierd colours like orange - red - green - blue greeny and I tried to search here for solutions but I didn't find any. So can I fix it with smacking again or do I have to go and change the LCD or what? And thanks.