Hacking the Xbox CONTROLLER

Step 27 Now add a lil heat

Fit the end of the beaded and flux-dipped wire into the via that you have previously scraped. Holding the wire there, touch the tip of your soldering iron to the joint just long enough for the solder to "disappear." Actually, some of the solder gets sucked onto your iron's tip. If you are lucky, the rest of the solder got sucked into/onto the via. If you look closely, you will see a small "volcano" of solder. This is the one sign of a good connection. The better sign is to give it a light tug to see if it remains attached. :)

See pic 2: Holding onto the other stripped end of the wire, you can slide the insulation down a bit, if you want to be tidy.

Professional engineers will tell you that you now have to wash away flux residue with water. I'm not a professional engineer. But if there's any visible residue around the joint, you used to much flux, and you should wipe it away.