Answer to: iPhone 5 Doesn't Charge Or Turn Onmight need a new lightning port charger. also, try removing the battery and then connecting it to itunes. if itunes recognizes it, it's not the port charger. www.liljohnnyappleseed.com
Answer to: Black screen after repairSounds like you have a bad LCD. If the connectors are seated properly, then you shouldn't have any white lines or flickering, and it should be completely touch-responsive. I'd get a new front glass.