I just attempted to replace the lcd and digitizer on an Ipad Mini 2 LTE. I connected everything correctly, but the lcd won’t turn on. The Ipad is recongized in Itunes. I would try to back it up but I can’t allow the computer to be accepted. I tried 3 three lcds. The previous broken one lit up, but was gray and orange with line. Is there some fuse burned out on the Ipad.