Written by Dale Richardson - Updated: June 23, 2023
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Banish the bathroom buzz for good. Here’s why your mirror hums and two ways to solve the problem.
Mirrors with LED lights and shaver sockets have a tendency to buzz. The most common reasons for LED lights to hum is an electromagnetic problem or interference. The LED transformer can also cause a mirror’s shaver socket to vibrate and cause a buzz.
A humming noise can grate on your nerves. Learn the two main reasons why bathroom mirrors buzz and how you can fix them.
When household items stepped into the “Smart Age,” bathroom mirrors were not left behind. One popular smart mirror is the type that has LED lights that light up when you come closer - no need to push any buttons! Infrared sensors do all the work. While that is very handy and all, mirrors with LED lights come with an annoying problem - they hum.
Needless to say, this can get very annoying. But what exactly is causing your LED lights to sound like a nest of bees? The problem is mainly electromagnetic. Devices with electromagnetic influence can interfere with LED lights in this way. If for some reason, you are using an LED dimmer, this can also cause the same problem.
But sometimes, the LED lights are just fine. If the mirror still buzzes and it has a shaver socket, then the socket is the culprit. Well, kind of. The power supply for the LED lights flows around the socket and since the current is usually very strong, it causes the socket to vibrate. The buzzing that you hate is caused by the vibrations of shaver socket.
LED lights are very bright. When used to light up mirrors, they can help you to see better when you do your makeup or shaving. But all that brightness needs a powerful flow of wattage and this can cause the humming if the electrical design is strained.
The driving force behind LED lights is either a LED driver or transformer. The latter is more powerful and can light up a larger number of bulbs without losing brightness. Whichever one your mirror has does not really matter. But you need to check your mirror’s driver or transformer to see if you have a faulty one. If so, it needs to be replaced and once you have a new power supply installed the humming should stop.
Learn how to test your LED driver .
Does your mirror hum only at certain times? We don’t mean every afternoon at four. Rather, it tends to buzz when something else is on - like a microwave. If so, the best course of action is to try and put a little distance between the mirror and the item that causes the buzzing.
Here’s a checklist of common household items that have an electromagnetic field.
Okay, sometimes LED lights can get a little bright. This is the reason why most of them - no matter if it’s a lamp or ceiling light - come with the ability to dim. Those that do not automatically have a dimmer can be connected to a dimming device.
A lot of people complain about a buzzing noise once they dim LED lights. This is not unique to LED mirrors but also occurs when lights and lamps are muted. In most cases, when LED lights are dimmed and the buzzing starts, the reason is compatibility problems with the dimming device and the LED driver or transformer.
The solution is to look for dimmers that have been tested by their manufacturers for compatibility with LED lights. Two of the most effective types of devices are CL and ELV dimmers.
Read This: This is why your bathroom gets dusty.
The good news is that your mirror is not faulty. The lights are fine and you should have no problem charging your shaver, either. The only problem is the powerful circulation of electricity caused by the LED transformer or driver. So, we have already established that it rattles the shaver socket! What can you do?
When it comes to DIY in the home, anything that rattles can usually be fixed in the same way - tighten it. In this case, it might be a good idea to tighten the screws on the LED driver. In some instances, this solves the problem.
This technique is also used by plumbers who tightened rattling pipes and they still rattle. By inserting a material that cushions the buzzing object, the noise can be eliminated. In this case, you might also favour this option since it is often easier than tightening the transformer in a small space or bathroom.
Make sure that the pad is made from heatproof rubber. The thickness might depend on how loud the sound is and the space available behind the mirror. But any thickness rubber pad should greatly reduce or remove the buzzing noise.
Once you have your rubber pad, carefully insert it between the backbox of the mirror and the shaver socket transformer. The shaver socket tends to vibrate against this backbox in most cases. When the rubber pad is in place, you should be able to enjoy some quiet time in front of the mirror.
Oh, shoot. So you tried everything and the mirror still hums at you. Regrettably, not all hacks work with every buzzing mirror. The reason is that the electrical design might have another, more complicated or unforeseen fault that cannot be fixed by DIY suggestions.
Should you have tried everything to fix the problem yourself and nothing works, there are only two things left to do.
One More Thing Before You Go!
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