Guitar Surgery

It’s guitar surgery day.
This is my Ibanez RG3120. It’s getting old, I got it back in 2002. The control knobs and output jack started making crackling sounds lately. (I think somebody lives in there, and scrambles eggs every time I plug in).
Luckily I have a $10 soldering gun which is not cooperating for obvious reasons, and this is probably the second time I ever used a soldering gun, so expect things to go very, very terribly.