After disassembly and assembly phone doesn't turn on
Hello
So I've disassembled and assembled my iPhone 6 plus in order to change housing, battery and screen.
After I've done it, phone doesn't seems to be doing anything.
Doesn't switch on whatsoever.
If I plug charger in I can feel some heat on top right side of motherboard but nothing else happens.
Is there are any common issues Im missing here?
Or can it be something else?