since the headphone jack is a mechanical part - ic could normally be fixed without replacing - but if you don't have any clue of those things - let it be!
i don't know what nick is trying to say with his answer - surely it't no real "component level repair" - the part is way to large for that category. but if you don't know how to use a soldering iron - find someone who is able to do that.
i think the mentioned microsolder is a "special product" - there are many smd soldering tip's - but changing the headphone jack doesn't require those tiny "needle" tip's - a regular small soldering tip is good enough.
but i would first check the headphone jack for dirt or something like that - it's not normal that those parts are getting mechanically damaged (mostly they die when you try to remove the logicboard - but with normal usage - you can't tear it of the logic board)