I've lost count of failed jacks in so many devices. As to self repair this is not how to learn how to solder. The first solder work I see from those learning usually destroy the boards. That's why we use practice boards.
Why not some Bluetooth earphones?
The night before last I was watching a video on my note 10.1, then all of a sudden the sound went out in my right earphone. I thought there was a glitch in the earphones but I tried using them with other devices and they worked just fine. I also tried using another pair of earphones with my tablet and it did the same thing with the other earphones. I was told by Samsung that it was the hardware and that I would have to ship it out for repairs. But I wanted to know if there was something I could do myself to avoid having to send my tablet out and also to avoid the repair fee.