How to Fix Weird Buzzing Noises in Your Wall Sockets

Introduction

Finding the source of strange buzzing or humming noises coming from your wall outlets can be annoying and even a little unnerving. However, in most cases, these noises are caused by relatively minor electrical issues that can be easily identified and fixed. In this article, I'll walk you through the common causes of buzzing wall outlets and the steps you can take to remedy the problem.

Check for Loose Wire Connections

One of the most common causes of buzzing outlets is loose wire connections. Outlets are connected to the main electrical system in your home through wires inside the walls. If these wires become loose at the connection points, it can cause vibrations that lead to buzzing.

To check for loose connections:

• Turn off the circuit breaker for the affected outlets.
• Remove the outlet cover and unscrew the outlet from the wall box.
• Inspect the side and back wires connected to the outlet, looking for any loose wire nuts or connections. The wires should be tightly joined with the connector.
• Check the connections visually and also gently tug on the wires to see if any are loose.
• Tighten any loose connections by twisting the connector clockwise. Be sure not to overtighten.
• Secure any ground wires that may have come loose from their connection point.

Replacing loose or damaged wire connectors and tightening all connections should stop buzzing from loose wires.

Check for Faulty Outlets

Faulty, worn out wall outlets can also vibrate or buzz. If the outlet's internals are damaged or worn, it can disrupt normal electrical flows.

To check the outlet:

• With the power off, remove the outlet and inspect for any scorch marks, discoloration, cracks, or damage.
• Look for signs of arcing, which can cause buzzing noises.
• Test outlets at various plug points with a circuit tester to see if the voltages are normal and stable.
• Replace any visibly damaged or faulty outlets. A new $3 outlet can often resolve buzzing issues.

Installing new, undamaged outlets will get rid of any buzzing from internally flawed outlets.

Inspect Devices Plugged Into the Outlet

Faulty electrical devices plugged into buzzing outlets are another possibility. Malfunctioning or damaged devices can emit buzzing noises that vibrate through the electrical system.

To check plugged-in devices:

• Unplug everything from the buzzing outlet and plug the items into another outlet to see if buzzing stops. This isolates if it's a device issue.
• Inspect cords and plugs of devices used in the outlet for damage. Frayed cords can cause buzzing.
• Test suspicious devices individually by plugging into an outlet that isn't buzzing to pinpoint the problem device.
• Replace or repair any damaged equipment and cords that may cause buzzing.

Removing damaged items from the buzzing outlet and testing devices elsewhere should show if the issue is with a particular device. Replace or repair as needed.

Check for Loose Outlet Boxes

Another potential culprit is a loose outlet box inside the wall. If the metal or plastic box housing the outlet is loose or corroded at the points where it's attached to the framing, it can rattle and buzz.

To inspect the box:

• Turn off power and use a voltage tester to be sure. Remove the outlet.
• Try moving the outlet box slightly to feel for any play or looseness. It should be snug against the wall framing.
• Look for corrosion or other damage around the box's attachment points to the studs.
• Tighten any loose screw connections securing the box.
• If necessary, remove the box, scrape corrosion from the wall and box, and re-secure it firmly to the framing before re-wiring the outlet.

Properly securing the outlet box to eliminate motion should stop any buzzing noise.

Call an Electrician for Potential Larger Issues

In some cases, the buzzing may be caused by a more serious problem with your home's electrical system. It's a good idea to call a licensed electrician if:

• The buzzing is coming from multiple outlets on the same circuit.
• The outlets feel warm or you smell burning.
• You've made all the checks above, but the buzzing persists.
• The circuit breaker trips repeatedly.

An electrician can use specialized tools to diagnose issues within wall boxes, wires, breakers, and elsewhere that may be causing more than just simple buzzing. It's best not to take risks with your electrical system. Paying an electrician is worthwhile to address any larger issue before it becomes dangerous.

Prevention Tips

To help prevent buzzing outlets in the future:

• Don't overload outlets with too many devices, especially high-power ones.
• Periodically check outlets for signs of damage or overheating.
• Use outlet testers to verify proper voltage.
• Hire an electrician if your home's wiring is outdated and potentially hazardous.
• Have all electrical work done by licensed professionals only.

While buzzing outlets are usually minor, it's still smart to identify and resolve the issue for safety and peace of mind. Following proper electrical best practices can help avoid problems.