Very strange screen problem
I had this problem with several customers now. Before I replace the new screen for customer, I always test the new screen, pluging the LCD and digitizer and turn it on, testing the screen.
So today a customer with a cracked 5S screen came in, I did the same thing. The new screen works great. I put camera and home button on, and install the screen, turn it on.
Not working! I tried a charge to turn it on. No response. The phone is like dead. I unplug every connector and the battery connector, plug all again and turn it on. No response.
Desperate. Try another screen. The same thing exactly. When just plug LCD and digitizer, every thing is good. After put camera and homebutton, not working.
Any body knows the reason?
Is this a good question?