Replacement screen doesn't work, is there any way to diagnose?
I got a replacement screen from a reputable seller and it was installed perfectly.
When the phone was first turned on (just by plugging in the charger) it was displaying the charging icon (dimly) for a second then the display would die with no further display even after pressing all the buttons, I pulled out the charger and plugged it back in and it did the same thing. Now after a few more times it's just a black screen.
I've heard that sometimes the motherboard doesn't activate the screen?
The phone will turn on and I can hear it when I press the volume up and down and I could hear the camera after pressing a combination of buttons. I don't think the touch is working. The back and other button light up. The home button seems to be functional.
Is there anyway to diagnose it? Can replacement screens reject motherboards from different regions? I've tried it on a different motherboard and the same thing happens.
Is this a good question?