If you’re a vinyl enthusiast, you know that there’s nothing quite like the sound of a record spinning on a turntable. But what happens when that sound is interrupted by a loud humming noise? If your turntable is humming, there are a few things you can do to troubleshoot the problem and get your records spinning smoothly again.
Ground Loop
One of the most common causes of turntable hum is a ground loop. A ground loop occurs when two or more pieces of audio equipment are connected to the same power outlet, but they have different ground connections. This can create a loop of current that flows through the audio cables, which can cause a humming noise.
To fix a ground loop, you can try the following:
- Plug your turntable directly into a wall outlet. This will eliminate any potential ground loops caused by power bars or surge protectors.
- Connect the ground wire from your turntable to the ground wire of your amplifier or receiver. This will create a single ground connection for all of your audio equipment, which will help to prevent ground loops.
- Use a ground loop isolator. A ground loop isolator is a device that can be plugged into your audio system to help prevent ground loops.
Improper Grounding
Another common cause of turntable hum is improper grounding. If your turntable is not properly grounded, it can pick up electrical noise from other devices in your home, which can cause a humming noise.
To check if your turntable is properly grounded, look for a ground wire that is attached to the back of the turntable. This wire should be connected to the ground terminal on your amplifier or receiver. If there is no ground wire, or if the ground wire is not connected properly, you can try the following:
- Connect the ground wire from your turntable to the ground wire of your amplifier or receiver.
- Use a ground loop isolator.
Loose or Damaged Cables
Loose or damaged cables can also cause turntable hum. If the RCA cables that connect your turntable to your amplifier or receiver are loose or damaged, they can create a humming noise.
To check if your RCA cables are loose or damaged, disconnect them from your turntable and amplifier or receiver. Inspect the connectors for any signs of damage, such as cracks or bent pins. If you find any damage, replace the cables.
Interference from Other Devices
Turntables can also pick up interference from other devices in your home, such as fluorescent lights, power lines, and microwaves. If you’re experiencing turntable hum, try moving your turntable away from any potential sources of interference.
If you’ve tried all of the above and you’re still experiencing turntable hum, it’s possible that there is a problem with your turntable itself. If you’re not comfortable troubleshooting the problem yourself, you may want to take your turntable to a qualified technician for repair.
Preventing Turntable Hum
The best way to prevent turntable hum is to follow the proper grounding procedures and to inspect your cables regularly for any signs of damage. You can also help to prevent turntable hum by keeping your turntable away from potential sources of interference.
