How do I replace the audio jack on my iPod touch 5?

The audio jack on my ipod stopped working suddenly a few days ago, it just quit, no sound at all comes from anything i plug into it. I've tried cleaning it out and that didn't provide any difference. I believe the problem to be the audio jack, Is it possible to replace, or is it one of the pieces soldered to the logic board?

As a side note, the screen on the righthand side of my ipod is bulging out noticeably, would this indicate a battery issue?