There are a few reasons why your guitar might hum when you touch the strings. Here are some of the most common causes:
- Grounding issue: This is the most common cause of guitar hum. When your guitar is not properly grounded, it can act as an antenna and pick up electrical noise from the environment. This noise is then amplified by your guitar amplifier and results in a humming sound.
- Single-coil pickups: Single-coil pickups are more susceptible to hum than humbucking pickups. This is because single-coil pickups do not have a humbucking coil to cancel out electrical noise.
- Faulty cable: A faulty cable can also cause guitar hum. This is because a faulty cable can pick up electrical noise from the environment.
- Electronic equipment: Electronic equipment, such as computers and fluorescent lights, can also cause guitar hum. This is because electronic equipment can emit electrical noise.
To fix the hum, you can try the following:
- Make sure your guitar is properly grounded. You can do this by connecting a ground wire from the bridge of your guitar to the ground terminal of your guitar amplifier.
- Use humbucking pickups. Humbucking pickups are less susceptible to hum than single-coil pickups.
- Use a shielded cable. A shielded cable will help to reduce electrical noise.
- Move away from electronic equipment. If you are near electronic equipment, try moving away from it to see if that reduces the hum.
If you have tried all of the above and your guitar is still humming, you may need to take it to a qualified guitar technician to have it diagnosed and repaired.
Here are some additional tips for reducing guitar hum:
- Keep your guitar clean. Dirt and grime on your guitar strings can cause hum.
- Avoid touching the strings with your fingers. The oil and dirt from your fingers can cause hum.
- Use a noise gate pedal. A noise gate pedal can help to reduce hum and other unwanted noise.
By following these tips, you can help to reduce guitar hum and enjoy playing your guitar more.