Phone not charging. How do I fix it.

I did something like this to an old Galaxy Mini S5570

Warning: Microsoldering involved, do this at your own (much higher than normal) risk

1. Disassemble the phone
2. Remove the motherboard
3. Use a heat gun and low-melt solder to remove the charge port
4. Lightly tin the pads of the new charge port
5. Solder the new port in place (Small soldering iron tip and microscope are useful)
6. Reassemble the phone