Hi, the problem is wrong cable connection or burned component Coil 4R7.
Taking the test is very simple. Turn on the ipad and put it under a lamp, if you see pictures in this way try to turn off and on.
If returns to normal operation status could be because it is inadvertently switched on during disassembly, otherwise you have the problem described above.
Sorry for my English! But im Italian!
Visit here for check our problem.
Cette réponse est-elle utile ?