Things You'll Need
Instructions
Find the break in the wiring. Connect the headset to your Xbox 360 controller and set up a chat with a friend who's willing to help you. Talk to your friend while you bend the wire over your fingers, and have him let you know when your voice starts to cut out. Isolate the area of the wire where the microphone cuts out when you're talking.
Disconnect the headset from the Xbox 360 controller. Sign out of the chat session.
Cut the wire to the headset on either side of the break you identified. Strip the gray outer layer of plastic off the internal wires on either side of the cut. Depending on whether the break is above or below the volume control you will have two or three wires.
Unwrap the copper wire from the white insulated wire inside it on both sides of the cut. Once you have about one inch of the copper wire free of the white wire, twist the strands back together. Strip the last half-inch of insulation off of all the wires on either side of the cut.
Slide a four-inch section of heat-shrink tubing over the longest side of the wire.
Touch the metal of the blue wires from either side of the cut. Twist the metal portion of the wires together. Do the same for the other insulated wires and the bare copper wire.
Touch the metal joint of the blue wire with the soldering iron until it's hot. Touch the solder to the wire until a drop or two melts off. Remove the solder and the iron. Secure all of the wire joints with solder.
Wrap the soldered joints in electrical tape so that all the solder is covered and no bare wire is exposed on the insulated wires.
Slide the heat-shrink tubing over the connection and shrink it with the heat gun.