If you need tuning machines, we ask that you send in photographs detailing the problem, as well as the date and place you purchased your instrument. If the electronics on your guitar are malfunctioning, please return to the dealer you purchased your instrument from, and have them give us a call. This is only to insure that you are within your window for warranty service. We also sell replacement tuning machines online at our shop. Please note that depending on the age of your instrument, specific parts that you request may or may not be available.