We had customer bring in a 2013 A1398 with cracked LCD. We replaced the LCD and there is no backlight/image. We tried 2 different LCDs and neither worked. We reinstall the old LCD and backlight and scrambled image is there. Has anyone seen anything like this before??? I know there is a difference between 2015 A1398 LCD and 2012-2014 LCDs. But is there different models for the 2012-2014?? We have replaced these before and never experienced this issue??