Why is My LED Strip Flickering?

Why is My LED Strip Flickering?

Experiencing LED flickering? This common issue often stems from loose connections, an overloaded power supply, or voltage drop over long runs. Ensure all connectors are secure, verify your power supply meets the required wattage, and consider injecting power at multiple points for longer strips. With these expert tips, you'll have your LED lights shining steadily in no time!


1. Poor or Loose Connections

Loose, corroded, or poorly made connections can interrupt the electrical flow, causing intermittent flickering. This is especially common with solderless connectors, which can become unreliable over time. Gently pressing or adjusting the connector may temporarily stop the flicker, indicating a connection issue

Solution:

  • Inspect All Connections: Check all connectors, especially solderless ones, for secure and clean contacts. Loose or corroded connections can interrupt the electrical flow, causing flickering.
  • Re-seat or Replace Connectors: If using solderless connectors, unplug and reinsert the LED strip to ensure a snug fit. Consider replacing unreliable connectors with soldered joints for better stability.
  • Secure Wiring: Ensure all wires are properly secured and not prone to movement, which can cause intermittent connections.


2. Overloaded or Faulty Power Supply

An overloaded power supply—where the total wattage of the LED strip exceeds the power supply's capacity—can cause the strip to flash or blink. This happens because the power supply's overload protection repeatedly shuts it off and on. Additionally, a failing power supply with aging components can lead to inconsistent voltage output, resulting in flickering

Solution:

  • Calculate Power Requirements: Determine the total wattage of your LED strip setup and ensure your power supply can handle at least 15% more than this value. For example, if your strips require 60W, use a power supply rated for at least 69W.
  • Replace Faulty Power Supplies: If the power supply is overheating, making noise, or causing the entire strip to flicker, it may be failing. Replace it with a new, appropriately rated unit. 
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  • Avoid Overloading: Do not connect more LED strips than the power supply can handle. Overloading can lead to voltage fluctuations and flickering.

3. Voltage Drop from Long Runs

Long LED strip installations can experience voltage drop, where the voltage decreases along the length of the strip. This can cause the LEDs, especially those farther from the power source, to flicker or dim. Injecting power at multiple points or using thicker gauge wires can help mitigate this issue.

Solution:

  • Shorten LED Strip Runs: Long runs can cause voltage drop, leading to dimming and flickering. Keep individual runs within the manufacturer's recommended lengths

  • Use Thicker Wires: Employ thicker gauge wires for longer distances to reduce resistance and maintain voltage levels.

  • Inject Power at Multiple Points: For extensive installations, inject power at multiple locations along the strip to ensure consistent voltage.

  • Consider Higher Voltage Strips: Using 24V strips instead of 12V can reduce voltage drop issues over longer distances.

By checking connections, ensuring your power supply is adequate, and addressing potential voltage drop, you can resolve most LED strip flickering issues. 

Listen to the experts! 

 

 

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