6 Most Common Problems with LED Lights And How to Fix Them


Although it seems that everyone is using LED lights for different applications (LED street lighting, residential lighting, and so on), LED lights are not 100% perfect. There can be problems with LED lights while you are using them, which may lead to bad experiences and even accidents. By reading this passage, you will be able to get to know some of the most common problems with LED lights and how to solve them. Let’s dive in!

1. Why do my LED lights keep flickering?


Check the power cord

The reason why the LED light is flashing may be that the power cord is not in good contact. You can plug it in again to ensure that the connection between the power cord and the plug is tight enough.

Replace the power adapter

If there is no problem with the power cord connection, then maybe the adapter went wrong. You can try to replace it with a new power adapter.

Clean the surface

The surface between the bulb and the lamp cap is likely to accumulate dust, leading to poor contact. So you can wipe it clean to see if things go better.

Replace the light bulb

If none of the above methods can solve the problem, then there may be a problem with the bulb itself. Changing to a new one may fix it.

2. Why are my LED lights buzzing?

Interference of other electrical devices

Some sensitive LED light fixtures will buzz when appliances such as microwave ovens are operating. It may happen more frequently if the devices are on the same circuit. The solution is to separate the circuits to prevent mutual interference.

Old wiring


Loose or aged wiring can be one of the causes. Over time, internal wiring gets old and causes damage to power connections. You’d better repair or replace this loose wiring.

Compatibility of light fixtures and LED lights

Some light fixtures need to work with corresponding LED lights. For example, dimming light fixtures may buzz if they are equipped with non-dimmable bulbs. To ensure compatibility, you may need to consult with the manufacturer of your LED light or purchase a bulb directly from the manufacturer.

3. LED lights not working

Faulty in the lights

Circuit board damage or light bead damage will cause the lamp to not light up. Thus, Replacing the light bead or repairing the circuit board can be a way to make the light work again.

Driver failure

The LED driver is one of the key components to ensuring the light works as normal. Problems with the driver include capacitor damage, resistor burnout, etc. You can repair the internal circuit or replace the driver.

Circuit failure

If there is a fault in the circuit, such as poor contact, a short circuit, etc., it will also cause the lamp to not light up. Checking the conditions of the circuit may help solve the problem.

4. Why are my light bulbs so dim?


It is common for LED lights to get dimmer than before after a long period of time because of light decay. However, if it gets very dim or becomes dim several months after you buy it, there may be something wrong with it.

Heat dissipation

One of the main reasons for the light decay of LED lights is poor heat dissipation. When the temperatures rise, the brightness of the LED lights will be affected. Adding a radiator or replacing the heat dissipation material may help improve the heat dissipation performance.

Unstable voltage

The brightness of LED lights also depends on the voltage applied to them. If the voltage keeps changing, the brightness of the light will change with it and can sometimes be too dim. To maintain a stable voltage, you can install a voltage stabilizer.


Too much dust accumulated in the light fixture will have a passive influence on heat dissipation and light transmittance. Thus, cleaning lamps regularly is necessary.

5. Why are my LEDs too bright?


With the same power, LEDs will seem brighter than traditional incandescent lights because they have higher efficiency. Little energy is wasted to generate heat, so LEDs produce more light. If the light is too bright for you, here are several ways to fix it.

Changing wattage or position

It is not true that the brighter an LED light is, the better it will make your place look. Instead, you need to choose a suitable one according to the size of your room, or it will consume too much power and may hurt your eyes. So when you find your lights are too bright, try to find other lights of lower wattage or put the lights higher.

Lampshade or dimmer

A lamp shade can distribute and unify the strong light so as to reduce the brightness. Another way is to change the brightness with a dimmable LED driver. This method will not cost you much, and some dimmers can even change the color temperature.

6. How do I stop my LED lights from attracting bugs?


Bugs are likely to be attracted by LED street lights, and there are several reasons why. First, since it is usually colder at night than daytime, bugs will seek out the heat LED lights emit. Second, studies have found that light with a short wavelength is obvious to bugs and is likely to attract them. Third, bugs can barely see yellow or red lights, so cooler light with a high color temperature, such as 5000K, will attract more bugs.

After knowing these reasons, I am sure you know what type of LED lights you should choose to avoid attracting too many bugs. Those that emit lower heat or can dissipate the heat efficiently and emit light of a longer wavelength and lower color temperatures will be the answer. The good news is that LED lights actually attract fewer bugs than traditional lights.

Conclusion about the problems with LED lights

As products of the new era, LED lights have improved in many aspects compared with traditional lights. They are energy-saving, emit little heat, and have a long service life. Although there are some common problems with LED lights, finding solutions can be easier than you ever imagined. And one of the most efficient ways is to find a reliable manufacturer and ask them about your problem. Why not contact Mokolight! As a manufacturer with more than 16 years of experience, Mokolight offers 7/24 customer support and at least a 3-year warranty. Mokolight makes any problem a piece of cake!

Written by ——
Adelyn Ward
Adelyn Ward
Master of Science; professional electronic engineer with over 7 years of experience in electronic design and engineering projects; proven expertise of LED manufacturing processes, capable of communicating intricate ideas to a broad range of audiences. Reach Me Now>>
Adelyn Ward
Adelyn Ward
Master of Science; professional electronic engineer with over 7 years of experience in electronic design and engineering projects; proven expertise of LED manufacturing processes, capable of communicating intricate ideas to a broad range of audiences. Reach Me Now>>
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