How to Fix Led Strip Lights When Half Are Out

Are you having trouble with your LED strip lights, where half of them seem to have gone out? If so, don’t worry—this is a common issue that can often be easily fixed. In this article, we’ll take a look at the causes and solutions for LED strip lights that are only partially functioning.

How to Fix Led Strip Lights When Half Are Out

We’ll discuss how to identify the source of the problem and offer tips on how to get your LED strips working properly again in no time.

So if you’re ready to get your lighting back up and running, let’s dive right in! In this blog post, we’ll walk you through the steps on how to fix led strip lights when half are out so that you can get back to using it in no time! So grab your tools, and let’s get started!

Why Are Half of My Led Strip Lights Not Working?

The first step to fixing led strip lights when half are out is to understand why this issue might have occurred in the first place. There could be a number of reasons why the lights aren’t working, including power issues, faulty wiring, or a bad controller.

If your power source has gone out or become disconnected, then that’s an easy fix: simply reconnect it and turn the power back on. If you suspect a bad controller, replace it with a compatible one recommended by the manufacturer.

However, if you believe there may be faulty wiring (or if none of these solutions work), then you’ll need to check each connection point between your LED strips and the controller. Make sure that all connections are secure and that the wires are not damaged. If you find any faults, then replace or repair these accordingly.

In some cases, it could be that the LED strips themselves have a manufacturing defect and aren’t working correctly. This can happen with older models of LED strip lights or ones that have been exposed to extreme temperatures for extended periods of time. If this is the case, the only solution is to purchase new LED strips.

Make Sure That All Connections Are Secure

10 Methods How to Fix Led Strip Lights When Half Are Out

1. Check for Loose Connections:

Make sure that all the connections between the LED strip segments are secure. Loose or disconnected wires can cause half of the LED strip to go out. Reconnect any loose wires and ensure that all connectors are properly seated.

If this doesn’t fix the issue, move on to step two. However, if the LED strip is still not functioning correctly after reconnecting loose wires, it may be time to replace the strip. Although it can be a little more expensive, replacing the LED strip is often the best solution when dealing with this type of problem.

2. Check for Damaged LED Segments:

Inspect the LED strip carefully for any visible damage to the LED segments. If any LEDs are visibly burnt out or damaged, they may need to be replaced. Follow the manufacturer’s instructions for replacing individual LED segments.

While you can usually find replacement LED segments, this may not always be an economical solution. If the LED strip is old and/or expensive, consider replacing it with a new one instead. Make sure to read reviews and get a product of good quality.

3. Check for Proper Voltage:

LED strip lights require a specific voltage to function properly. Make sure that the power supply or driver is providing the correct voltage to the LED strip. If the voltage is too high or too low, it can cause half of the LED strip to malfunction. If the power supply or driver is providing too low a voltage, replace it with one that provides the correct voltage.

If it is providing too much voltage, use a voltage regulator to reduce the voltage supplied. However, if the power supply is functioning properly, you may need to replace the LED strip. Though LED strips are designed to last for many years, they do experience wear and tear that can lead to malfunction.

Power Supply is Functioning Properly

4. Check for Proper Polarity:

LED strips have polarity, which means that they need to be connected with the correct positive (+) and negative (-) terminals. Check that the LED strip is connected with the correct polarity, following the manufacturer’s instructions. If the LED strip has been connected improperly, this can cause some LEDs to stay off or not work properly.

You may need to rewire the connections to fix the issue. To find out if the connections are reversed, try swapping the positive and negative wires. If this fixes the problem, make sure you reconnect them with the correct polarity. It’s a good idea to mark the positive and negative wires with tags or colors such as red for positive and black for negative so you don’t get them confused in the future.

5. Check for a Faulty Controller:

If you are using a controller to control the LED strip lights, it’s possible that the controller itself is faulty. Try resetting or reprogramming the controller or replacing it with a known working controller to see if that resolves the issue.

If the controller is faulty, you may need to purchase a new one. Be sure to buy a controller that is compatible with your existing LED strip lights. If you are unsure which controller to purchase, consult the manufacturer of your LED strip lights for assistance. If the controller is not the issue, you may need to move on to the next step.

6. Check for a Faulty Power Supply or Driver:

The power supply or driver that provides power to the LED strip lights can also be the source of the problem. Test the power supply or driver with a multimeter to ensure that it is providing the correct voltage and current to the LED strip. If it is not, then the power supply or driver will need to be replaced.

However, if it is working properly, then the problem may be a faulty connection somewhere between the power supply and LED strip. In this case, check all connections and ensure that they are secure and not corroded. If necessary, clean any connections with a cotton swab dipped in rubbing alcohol. Once all connections have been checked, turn the power supply back on and test the LED strip lights again. If they still don’t work, then the problem may lie within the LED strip itself.

7. Check for Corroded Contacts:

Over time, the contacts on the LED strip and connectors can become corroded, resulting in poor connections or loss of power. Clean the contacts with a gentle brush or contact cleaner to remove any corrosion and ensure a clean connection.

If the contact points are in bad condition, consider replacing the LED strip or connectors. While you’re at it, make sure the power supply is securely connected to the LED strip and that all connectors are tight. Try to plug the power supply into a different outlet to make sure there isn’t an issue with the power source.

Plug the Power Supply

8. Check for Pinched or Damaged Wires:

Check the entire length of the LED strip for any pinched or damaged wires. Pinched or damaged wires can disrupt the electrical flow and cause half of the LED strip to go out. Repair or replace any damaged wires as needed. If you can’t find any issues with the wires, it may be time to look at the LED strip lights themselves.

However, it’s important to note that LED strips often have a limited lifespan and may need to be replaced. While LED strip lights can last a long time, they can’t last forever. If you’ve been using the same strip of LED lights for a few years, it may be time to update them. Replacing your LED strip lights is easy and can make a big difference in the look and feel of your home.

9. Check for Software or Firmware Issues:

If you are using a smart LED strip that is controlled by software or firmware, check for any software or firmware updates or reset the settings to default. Sometimes, software or firmware issues can cause half of the LED strip to malfunction. If the issue persists, contact the manufacturer for further assistance.

10. Contact the Manufacturer or Seek Professional Help:

If you have tried all the above methods and are still unable to fix the issue, it’s best to contact the manufacturer for support or seek professional assistance from a qualified electrician or LED lighting technician.

Always exercise caution and follow proper safety precautions when working with LED strip lights or any electrical components. If you are unsure or uncomfortable with troubleshooting or repairing LED strip lights, it’s best to seek professional help to avoid any potential hazards.

Repairing Led Strip Lights


In conclusion, troubleshooting and fixing LED strip lights when half of them are out can be a difficult process. However, with the right set of tools and knowledge, it can be done safely without any professional help.If you have tried all the methods mentioned above but still cannot fix your issue, contact the manufacturer for support or seek professional assistance from a qualified electrician or LED lighting technician to ensure safety. Thanks for reading, and we hope this has given you some inspiration on how to fix led strip lights when half are out!

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