iPhone 4 wont charge after replacing charge port

So as the title says I have this white Iphone 4 that refuses to take a charge. Originally it wouldn't take a charge, but would detect power, and connect to a pc. So after some searching it I found it to be a bad charge port. When the part comes in I install it only to find it still wont take a charge but does detect the power and can be seen by a computer.

I have already tried the battery in a different iphone and it was able to charge that way. I'm thinking it's something on the logic board that is bad.