Things You'll Need
Instructions
Loosen the string that is muted by turning the corresponding tuning peg until you can pull the string from the frets by about 1 cm. Grab the string that is muted.
Roll up a small piece of tinfoil to approximately 1 cm. Place the tinfoil under the loose string and over the front part of the fret and slightly in front of the fret.
Tighten the string and allow it to lock the tinfoil in place over the fret. The string will pull the tinfoil over the fret as you tighten it.
Retune the string. If you still hear a buzz or mute, make a slightly larger square with the rolled-up tinfoil