Repairing a broken guitar string is a matter of removing the broken string carefully and replacing it with a new one. Guitar strings may break for a number of reasons, including poor string playing, rough edges inside the tuning posts, sharp frets and rusted frets.
There are a number of general steps to follow when replacing guitar strings.
Step 1: Remove the strings
While this process may seem fairly simple, it must be done carefully, especially when dealing with older guitars. If multiple strings are being repaired, then removing all the strings at once may cause the neck of the guitar to warp or even snap. However, sturdier guitars should not have this problem.
Step 2: Insert the new string
First, secure the new string into the bridge of the guitar. This is a different process for different guitars, but copy the method used to fasten the other strings on the guitar. Then, loosen and align the tuning peg with the nut slot, and draw the string through the hole. When there's about 5 centimeters between the string and the fret board, there will be room for the tuning peg to be wound around three times.
Step 3: Fasten the string
Bend the end of the string so that it can be folded under itself. If the string is sharply pulled upwards, it will stay in place while the tuner is turned in three complete circles until tight. Cut the excessive string.