How to Fix Led Strip Lights When Half Are Out

Do you have a set of LED strip lights that stopped working? Has only half of your strip lit up and the other half gone blank? If so, it is possible to fix them. While replacing or taking the strips to repair centers may be necessary in some cases, there are easy solutions you can attempt yourself before assuming something needs replaced! In this blog post we will discuss how to fix led strip lights when half are out. Read ahead for more details on diagnosing your issue, potential causes, and ways to bring back those flashy LEDs again.

How to Fix Led Strip Lights When Half Are Out

If you’re working with LED strip lights, chances are you’ve encountered a situation in which half of the LEDs seem to be out. This can be incredibly frustrating, as it may appear that your installation or purchase were faulty or something is damaged beyond repair. Don’t despair just yet though – there are several possible causes and solutions for why these strips become half lit that you can try yourself. Here, we’ll look at what could potentially be causing the problem and how to fix led strip lights when only some of them are illuminated. With some easy troubleshooting steps and little bit of tech know-how, you may not have to worry about buying a new set after all.

What Causes Led Strip Lights Half Out?

There are many reasons why the LED strip lights may be half out. Such as:

1. Bad Connection in the Wiring

One of the most common causes of LED strip lights that are only half working is a bad connection in the wiring. This can occur if the wires were not properly connected or there is corrosion or debris blocking the flow of electricity.

2. Poor Quality Power Supply

If you are using a power supply that is not of good quality, it may cause interference with the LED strip lights, resulting in them only partially working. Also, if the power supply is not providing enough voltage to the strip lights, it can cause them to be half out.

You Are Using a Power Supply

3. Too Much Voltage

If too much voltage is being supplied to your LED strip lights, it can also cause them to burn out or only partially work. This may happen if you have connected more than one strip light together and the power supply is not able to handle the increased load.

Fortunately, there are some simple steps you can take in order to fix LED strip lights that are half out. Be sure to take safety precautions and turn off the power before attempting any repairs.

10 Tips About How to Fix Led Strip Lights When Half Are Out

1. Check the Power Source

This is usually the most common cause of led strip lights not working. Check the power source of your lights and make sure it is connected correctly. Also, check the fuse and make sure it is not blown.

2. Check the Connectors

If your led strip lights have connectors, make sure they are securely connected and all wires have contact with each other. If the connections are loose, try tightening them up or replacing the connector entirely. Also, check the power supply and make sure it is supplying enough power to the led strip lights.

3. Check for Short Circuits

If you have a multimeter, you can use it to check for any shorts in the wiring or connections that could be causing your led strip lights to malfunction. If there are any issues with the wiring, it is best to call an electrician for professional help.

If You Have a Multimeter

4. Replace Light Bulbs

If your led strip lights have light bulbs, check that they are all working and replace any burnt out or dead ones. It is relatively easy to do this yourself but make sure you disconnect the power before doing so in order to avoid any potential hazard.

5. Clean the Lights

Dust, dirt and other contaminants can build up on the led strip lights over time and this can cause them to malfunction or not work at all. Try cleaning the lights with a damp cloth or compressed air to remove any debris that may be blocking the light from reaching its full potential.

6. Check for Loose Wires

If your led strip lights have exposed wires, make sure they are not loose or frayed. If you find any, secure them back in their place with electrical tape or insulation and test the lights again to see if this resolves the issue.

Cleaning the Lights
With a Damp Cloth

7. Check for Broken Bulbs

If some of your bulbs are not working, check to see if they are broken. If so, replace the bulbs and then test your lights again to make sure that this has solved the issue. Also, check the wiring and make sure it is tight.

8. Check the Voltage

If your led strip lights are not working properly, try testing the voltage of the power supply to make sure that it is within the proper range. If it is too low or too high, this could be causing an issue with your lights.

9. Check for Bad Drivers

Sometimes, the drivers of led strip lights can go bad and this will cause them to not work properly. If you suspect that this might be the issue, try replacing the driver and testing your lights again. Also make sure that the driver is compatible with your lights and has enough wattage to power them adequately.

10. Get Professional Help

If all of the above steps have not solved the issue, it may be time to get professional help from an electrician or a company specializing in led strip lights. This will ensure that your lights are fixed properly and working as they should.

By following the above tips, you can easily identify and fix any issues your led strip lights may have when half of them are out. Remember to always use caution when dealing with electricity, and if you need help, don’t hesitate to call a professional for assistance. Good luck!

Frequently Asked Questions

What Precautions Should I Take When Fixing Led Strip Lights?

When fixing Led strip lights, it is important to take the necessary safety precautions. Wear gloves and eye protection at all times when handling or working with electrical equipment. Make sure you turn off the power source before attempting any repairs. Additionally, make sure you are working in a dry area and do not use any liquids or sprays near the lights.

What Is The Difference Between Soldering and Crimping?

Soldering is a process of melting metal to join two pieces together, while crimping involves using pressure to close an electrical connection. Both methods are used for fixing damaged Led strip light connections, however soldering provides a more reliable and longer-lasting connection.

Wear Gloves and Eye Protection

What Tools Are Needed To Fix Led Strip Lights?

In order to fix Led strip lights, you will need a soldering iron or crimping tool, solder, heat shrink tubing and electrical tape. Additionally, if the power source is broken you may need a wire cutter or stripper to replace the old wires with new ones.

How Can I Test The Lights To See If They Are Working?

If you have repaired the connections in the Led strip lights, you can test them with a multimeter to make sure they are working correctly. First, set the multimeter to measure DC voltage and then connect it to the power source and strips. When tested, the voltage should remain stable. If it is fluctuating, then you may have to inspect the connections further or replace any defective components.

How Do I Troubleshoot Other Problems With Led Strip Lights?

If your Led strip lights are not functioning correctly after checking the connections and power source, you can use a multimeter to check for any shorts or breaks in the circuit. Additionally, you can use a continuity tester to identify any defective components within the strip. Replacing these components should resolve the issue and restore working order.

What Are Some Common Problems With Led Strip Lights?

Some common problems with Led strip lights include flickering, dimming or half of the lights not working. These issues can be caused by either a faulty connection or defective components within the light strip. By troubleshooting with a multimeter, you can identify any breaks or shorts in the circuit and replace any defective parts. This should restore normal functioning of your Led strip lights.


Now you know how to fix led strip lights when half are out. This can be fixed in a few simple steps, such as checking the power supply, making sure the strips are properly connected, and testing individual segments. If all else fails, contact the manufacturer or your local electronics repair shop for assistance. 

With these tips and tricks, you’ll be able to get your lights back up and running in no time!

Thanks for reading and we hope that this guide was helpful in addressing your issue with led strip lights. With these steps, you’ll be able to easily diagnose and fix the problem so that you can enjoy your lights as they were meant to be. Happy lighting!

Photo of author

Jennifer Branett

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