Chosen Solution
Hello! I got a problem! I dropped my iPhone 6s. The screen went black and I first thought that it was a dead screen. After trying to check it I opened it and tried with another screen which I knew was working. I am very carefull with the flex cables, but nothing happened! the screen was still black even though the phone could ring at play music etc. I am sure I didn’t made anything worse in the repair. What could be the problem? Thanks in advance!
Iphone 6s has a very sensitive backlight chip. If you disconnect the screen from the board while it is turned on that can damage the backlight chip. When you drop your phone the cable can disconnect, and the backlight chip can be damaged. It means that the phone working well but the screen remains black.
When you drop your phone and hits the floor. It causes the PMIC (Power Management Integrated Circuit) chip on the logic board to have a cold solder joint. To have that repaired you would have to mail it in to a microsoldering repair shop that specializes in that.
