iPhone 4 gsm won't turn on no matter what after power flex replacement
Hey guys! I am a cell phone technician and I have done possibly over a hundred iPhone 4 repairs in my time doing this. Just a common power button flex replacement. Well I did the replacement and the power button feels great. BUT the phone no matter but I do won't turn on. I've swapped batteries, the charge port, the screen, another power flex, and plugged it in and held the home button and nothing works. I've even tried another screen. Any ideas? I've taken the phone apart now 6 times and rechecked everything I could think of as I went. Nothing is out of place, no damage on the logic board, and nothing to be alarmed with besides a couple of screws missing when I first took off the back. It was functioning before I did the repair but now it simply isn't turning on no matter what. Any ideas would be fantastic because I am stuck! Preferably someone who has the experience like I do with the iPhones. Thanks I appreciate it!