Chosen Solution
Customer brought in an iPad Pro 12.9" with a cracked screen. I replace the screen and soldered the new one on properly 100%. Customer has issues with the dead spot on the screen. So I ordered a brand-new digitizer assembly and install that one. Exact same issue as the first one. Anybody have any suggestions? No apparent damage to the control board and soldering is good. Thanks!
then the controller board is bad, simple Update (11/11/2016) sounds to me like proccess of elimination its the controller board, too much heat, etc can damage a controller board, hope you find a solution.
lcd is not ok failure
