No life after screen replacement
So we fix around 50 iPhones a week and for the first time one died on us. We fitted the screen, passed back to the customer and was fine, after an hour they brought it back without any life at all. We have the customer a loan phone while we look to sort the issue.
I've done all the standard diagnosis tests, screen, battery, charge port, backlight but absolutely nothing. There is no heat going to the board at all and is totally non responsive.
It wasn't bent or beat up, just a simple crack in the screen.
We are just training on board level repair but not enough to say where the issue lies, at the moment it's simple backlight repairs. Can anyone point us in the right direction for diagnosing a possible cause.
Is this a good question?