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So this iPhone 7 has no image and does not connect to iTunes. After opening it i figured that it was little bit low on battery, after charging the phone, the battery was on 3.8V which should be fine. After hooking it on a DCPS, the ammeter didnt show any suspicous behaviour. No current without booting. Around 200 - 400 mA current on booting with one spike to 1 - 2 A. I think this is fine right? Additionally, I checked all the display connector pins on the logic board in diode mode and they are normal. However I have no idea what I could check next. Any ideas?
The readings from your DCPS are that of a phone that is booting. If it has a passcode iTunes will not recognise it till it has been entered. Your next step is to determine if it is an image problem or backlight. · Check for image with a torch on the screen. · Check all pins on the LCD connecter and make sure none are pushed into the plastic.
