Chosen Solution
I wanted to replace the battery of my iPhone 6 Plus because the battery was discharging very fast. Ordered a new battery, followed something similar to this guide iPhone 6 Plus Battery Replacement and after charging it for a while, it didn’t seem to turn on. What actually happened is that the screen didn’t turn on anymore. Because it still made a sound when plugging in the charger. So I ordered a new screen that had everything on it except for the home button, followed this iPhone 6 Plus Screen Replacement and now it doesn’t even make a sound anymore when plugging in the charger. The screen is still black. I think it still powers on because when pressing volume up/down and the power button it vibrates shortly. Placing back the old screen makes the sound appear again. I’ve been very careful with disconnecting the connectors and placing back the correct screws. How can I figure out what is broken? To summarize: Old/new battery does not make a differenceOld screen makes a sound when plugging in the chargerNew screen makes no sound when plugging in the chargerFor both old/new screen the vol up/down + power button triggers a vibration
It’s a possibility that you blew the backlight circuit. Look at the screen with a flashlight on an angle and see if you can see anything. Make sure to make sure the phone is on an awake. It probably blew a filter or two.
