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Why Are My LED Light Not Working But Has Power?

Even if the outlet still has power, your light can completely stop working suddenly. So what is the leading cause of this non-lighting bulb phenomenon?

Quite a few problems are associated with this condition, such as faulty circuitry, loose connections, and a faulty power supply. This article is all you need to understand why your LED light not working but has power and provides effective solutions. Continue reading to understand.

Most Common problems with LED Lighting

What are some popular issues with LED lights?
What are some popular issues with LED lights?

If you are using or installing incorrectly so it is likely that your LED lights does not work correctly. This may occur in some visible phenomena:

LED light is not working but has power

The apparent phenomenon is that devices like LED strips bulbs cannot illuminate even when the dimmer switch is on. Or strips, light bulbs stopped working even though they generally worked in the previous days.

Other related phenomena include the lighting whole system stop working and lights randomly turning off.

Only half of the LED Light works

It is one of the most common problems, especially older versions.

When the metal in the bulb heats up unevenly, many light strip parts may not light up while others continue to function correctly. The same thing happens when a part of LED bulbs get too hot.

That’s why they call it an incomplete lighting effect seen in strips or other fixtures.

My LED strips are displaying the wrong colors

Wrong colors strips creating such unwanted moments
Wrong colors strips creating such unwanted moments

Last but certainly not least, your LED Strips may malfunction and display the wrong color. In other words, the light strips perform poorly at their entire length.

For example, the light stripped the 100mm you selected is orange, but now there are about 50mm showing green.

Why LED light not working?

Many reasons happen in variations of LEDs, including ceiling lights, LED strip lights, and LED bulbs or LED panel lights. The main sources of error include the following:

External Reasons

What are the external reasons?
What are the external reasons?

External reasons for LED lights or strips not functioning normally. Just like any other technology, LED lights certainly can’t work well if it is:

  • Cheap pricing accessory
  • Low quality LED bulbs
  • Faulty Setup
  • Physical Damages…

Now, let’s look at other external reasons that make your LED lights not working. These include:

Unstable battery connection

LED lights can only work correctly when receiving enough energy. In other words, if your strips or whatever LEDs have poor battery connection, they won’t be able to operate correctly.

In this case, you need to replace the connected battery with a new one. Or check the jack to consider if it connects entirely and seamlessly.

Choosing the wrong power supply

be cautious with led lights system power supply
Be cautious with led lights system power supply

Choosing the wrong power supply or work voltage is another underlying cause. Understand that LED lights may not function or even be damaged when not providing output voltage as required, too high or too low.

So make sure you use the correct power supply for your needed light.

Checking your LED lights, strips specifications or consulting the manufacturer’s recommendations will help you make the most informed decision.

Capacitor issue

in some case capacitor can be the reason for led strip not work while still having power
In some case capacitor can be the reason for led strip not work while still having power

We all understand the importance and excellent function of capacitors like:

  • Store energy
  • Release to devices as they need to stabilize the electrical current in the circuit

If the capacitor fails or cannot regulate the circuit electrical current properly, there may be a problem. In this case, you can buy a suitable replacement product without purchasing new lamp or led bulbs.

Bulb installation

Wrong bulbs installation can lead to leds not working

Improper setup and installation are common causes that many people suffer from. If you insert the bulb into the socket incorrectly, it will likely need troubleshooting.

The same thing happens when you are tight and wail that the LED ceiling light not functioning as expected.

Caused from grid

When it comes to external reasons, many people immediately think of grid problems, including power surges, brownouts, and blackouts.

If the power surge increases suddenly, it can damage the LED driver or other internal electronic components and become defective. Sometimes, it could be a reason for flickering led lights and dimming in LED lights bulbs.

Although LEDs do not consume much energy. But too many devices running on the same grid can create an electrical overload. From there appear the LED light problems.

Bad quality bulb

Watch out for cheap pricing led bulbs

The truth is that low-end LED strips, LED bulbs will not perform as well as higher-quality ones. Strips and light bulbs may flicker or dim when connected to a power supply. Sometimes they will be permanently unable to shine up.

Smoking or losing wires

Another common cause forthe issue is loose wiring. If the issue is with the manufacturer, request a return and get a new product.

There are also cases where the wiring is damaged due to weather, animals, or other impacts during outdoor use.

Besides, the short wire can also cause strips and light bulbs to not work. That is, users accidentally let 2 positive or negative cables touch each other.

Old accessories

Finally, when your led lights or strips is in old accessories condition, they will not be able to run smoothly. Because the product’s lifespan is limited, it won’t last forever.

Broken or incompatible dimmer switch

old model switch may no longer compatible with Led Lights
Old model switch may no longer compatible with Led Lights

Using a dimmer switch without checking the compatibility might prevent LEDs from turning on. As such, non dimmable led can stop working if there are issues with the transformer, fuse, or electrical wiring. 

To access your lighting framework and discover the issues with the dimmer switch, you should call for an electrician unless you have been involved in this field.

Internal Reasons

led may not work due to internal reasons
Leds may not work due to internal reasons

Internal reasons are another essential aspect to consider regarding total problems.

Specifically, the breakdown or damage inside the LED lighting itself causes them not to function correctly. These including:

  • Faulty LED Driver: This is a prevalent cause related to the supply voltage  for led bulbs. This department is responsible for the voltage regulation fit provided for LEDs. Thus, in the case of damage or problems, the LED chip can be damaged or not work altogether.
  • Damaged electrical circuit board: Most electronic devices in the brand come with an electronic board. It regulates the current flowing through the machines and protects them. When this unit is interrupted or damaged, other related contacts, such as LEDs, bulbs cannot turn on or function properly.
  • Burned-out inner accessories: The accessories inside were also burned means problems inside LED lighting fixtures. This causes your led lights to malfunction or even be defective altogether.

To sum up, these internal reasons are the main reason for power supply problems.

It can cause these, leading to an electrical curren supply issue within the circuit, not converting, or incompatible electric flow. Accordingly, LEDs may:

  • Not working, won’t turn on
  • Flickering or Flashing on and off rapidly
  • Not shining bright as usual

How to fix LED light that won’t turn on

Are you having trouble with LED string lights not working? Don’t worry, and you can try the following steps to fix this issue, including:

Step 1: Identify the problem

Identifying carefully the issue you are facing with
Identifying carefully the issue you are facing with

First, you’ll need to identify the bulb problems you’re having, such as:

  • Is the light not turning on at all?
  • Is it flickering or dim
  • Is it turning on and off intermittently?

Step 1 is crucial because it dramatically influences your decision to choose the right solution for the right LEDs case.

Step 2: Turn off the power supply

Deactivate the power supply to avoid accidents. This is an essential step before you start repairing your leds or any device connected to your home’s power supply.

Electricity is so dangerous as it can even be deadly, it is definitely a wise choice to search for qualified electrician troubleshooting these! So take this important step 2.

Step 3: Uninstall the bulb and check

Now let’s uninstall and check bulb that is damaged or not. If it is burnt and damaged, you must buy a new replacement and change light sources. The replacement cost for light bulbs is relatively cheap, so in this case, you or anyone can do it.

Otherwise, continue to the next step if the issue is not with the bulb.

Step 4: Check connection and wiring

Recheck the wiring
Recheck the wiring

Most likely, the cause of the integrated LED light sources not working is due to the connection system and the set of wires.

Since loose connections will cause LEDs can’t be turned on, so please make sure they are tight and secure.

Step 5: Replace damaged wires

If wires cause problems for LEDs, please contact for professional electricians if this is the first time you have approached this. These workers will help you handle the situation, troubleshooting it professionally and quickly.

Step 6: Reassemble and turn on the power supply

Finally, reassemble and turn on the power supply to check if the light is functioning correctly.

How to fix LED strip light that is not working

How to fix LED strip light not working, malfunctioning
How to fix LED strip light not working, malfunctioning

The home LED strip is one of the famous lighting solutions because of its durability, energy efficiency, and super versatility. Therefore, many households and large businesses love and trust this type of lamp.

In the next section, we will provide some valuable tips and tricks troubleshooting LED strip lights stopped working.

Check the power supply and ensure it is connected to the LED strip

The first step is to check the power supply and ensure it is to the strip. You need to make sure you’re connected strip light properly with the power supply. Because when not connected properly, it won’t light up.

Also, you should check the R,G,B wires to check out if they are correctly plugged in. Similarly, the original socket may witness issue, so try plugging it into another outlet to rule this out.

Check LED strip

The next step is to check the strip. It may have been damaged if you have correctly connected the power supply. If LED strips are damaged, replace new ones.

To avoid waste, try reconnecting and make sure the light strip connects seamlessly to the power supply without any looseness.

Check the remote

Glitchy remote may lead to led strips not working
Glitchy remote may lead to led strips not working

Some led strip lights come with a remote. If you are using a similar effect, ensure the attachment works correctly.

You should perform a battery test on the remote control. If it’s out of battery, replace it with a new one.

Alternatively, you can ask the supplier to sell you a new remote to eliminate the controller damage problem.

Find out more: Why isn’t my led light remote working

Try resetting

Finally, try resetting everything, including resetting the strip remote or LED strip.

To do that, I recommend you cut off the power and unplug the light from the socket. After a few minutes, plug it back in and turn on the power.

If all solutions above do not work, you should contact an electrician or get another one.


To sum up, there are many reasons why LED light is not working but has power, including external and internal causes.

For example, the device may need to be correctly set up, or its electronic board, power supply may be damaged or it is the incompatible dimmer to be addressed.

Depending on the issue LED light sources encounter, you can apply different solutions. It is essential to identify the issues that the LED is experiencing correctly. Yet, if repairs are complicated for you, get an electrician’s help.

In short, Emberlight has covered all the practical aspects of LEDs problems, from phenomena and causes to solutions.

This article was helpful to you. Thanks for reading! Maybe a share can help us a lot πŸ™‚

Related LED Guidelines

Lexii is a marketing creative with 6 years in Event, Product, and Social media marketing. She has assisted with coordinating and managing marketing campaigns for Procter & Gamble, and assisted with growth of smaller CPG brands on a national level.

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