Why does my LED shop light flash on and off?

October 24, 2023


If you've ever found yourself in the middle of a project in your workshop, garage, or any other workspace, you know how crucial a reliable light source can be. So, it can be pretty frustrating when your LED shop light starts acting up by flashing on and off unexpectedly. But fear not! In this blog, we'll break down the common reasons why your LED shop light might be flickering and provide some simple solutions to fix the issue.

1. Loose or Faulty Wiring

One of the most common reasons for LED shop lights flickering is loose or faulty wiring. Over time, the electrical connections in your light fixture can become loose due to vibrations, temperature changes, or poor initial installation. When this happens, it can interrupt the flow of electricity and cause your light to flicker.


- Turn off the power to your light.

- Carefully inspect the wiring connections, ensuring all wires are tightly secured.

- If you find any loose or damaged wires, repair or replace them as needed.

- Be sure to follow safety precautions when working with electrical connections.

2. Incompatible Dimmer Switch

If your LED shop light is connected to a dimmer switch, it's important to ensure that the dimmer switch is compatible with LED lights. Traditional dimmer switches designed for incandescent or fluorescent bulbs may not work well with LEDs and can lead to flickering issues.


- Replace the incompatible dimmer switch with one specifically designed for LED lighting.

- Make sure to follow the manufacturer's recommendations for dimmer switches compatible with your LED shop light.

3. Voltage Fluctuations

Fluctuations in your home's electrical supply voltage can cause LED lights to flicker. These fluctuations are often due to various factors, such as power surges, electrical grid issues, or multiple appliances running simultaneously.


- Install a voltage stabilizer or surge protector to regulate the electrical supply to your lights.

- Contact your utility company to address any recurring voltage problems in your area.

4. Overloaded Circuit

An overloaded electrical circuit can result in LED shop lights flickering. When a circuit is overloaded with too many appliances or devices, it struggles to provide consistent power to all of them, causing flickering and other issues.


- Identify the circuit that your shop lights are connected to and reduce the load on that circuit.

- Consider redistributing some of the devices on other circuits or installing a new dedicated circuit for your shop lights.

5. LED Driver Issues

The driver in your LED shop light is responsible for regulating the electrical current and voltage supplied to the LEDs. If the driver is malfunctioning, it can cause flickering and other performance problems.


- If your LED shop light is still under warranty, contact the manufacturer for a replacement.

- If it's out of warranty, you may need to replace the driver. Consult a professional electrician for this task if you're not experienced with electrical work.

6. Poor Quality LED Lights

Sometimes, the flickering issue may be due to the quality of the LED light itself. Cheaper, lower-quality LED lights may have less stable components, leading to flickering problems.


- Consider investing in higher-quality LED shop lights from reputable brands.

- Read reviews and seek recommendations to ensure you're buying reliable LED fixtures.

7. Temperature Extremes

Extreme temperatures, whether too hot or too cold, can affect the performance of LED lights. LEDs are sensitive to temperature, and operating them outside their recommended range can cause flickering and reduced lifespan.


- Ensure your LED shop lights are installed and used within the manufacturer's recommended temperature range.

- In extremely cold conditions, some LED lights may take a moment to warm up and reach full brightness.

8. Interference from Other Electronics

Electromagnetic interference (EMI) from nearby electronic devices can disrupt the performance of LED lights. Common sources of EMI include radios, televisions, cordless phones, and other electronic equipment.


- Move any electronic devices that might be causing interference away from your LED shop lights.

- Consider using EMI filters or surge protectors to reduce electromagnetic interference.

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In conclusion, a flickering LED shop light can be a frustrating issue, but it's usually something that can be fixed with some troubleshooting and a little bit of know-how. Start by checking for loose or faulty wiring, ensure you have a compatible dimmer switch, and address any issues with voltage fluctuations, overloaded circuits, or interference from other electronics. If all else fails, consider the quality of your LED lights, their operating temperature, and their age. By identifying and addressing the root cause of the flickering, you can enjoy a reliable and well-lit workspace once again.


Urban Splatter

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