fixing the N9 port is not difficult at all. I fixed one for a friend, and also fixed both my N900 USB ports.

This was my 1st SMD project and went well first time

If you will DIY this, get the schematics, disassembly diagrams, and do a bit of research on SMD work.

If you don't have proper hot air gun and must use a soldering iron, lots of flux and solder wick are a MUST. I used this latter method.