Reasons for LED Bulb Flickering and Troubleshooting Guide

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LED bulbs have become the mainstream choice for lighting in modern homes and commercial places. However, some users may encounter the problem of LED bulb flickering. This problem not only affects the user’s visual experience but may also cause discomfort, especially for sensitive users. So, what are the reasons for LED bulb flickering? What are the solutions? This article will answer them one by one.

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I. What is LED Bulb Flickering?

LED bulb flickering refers to the unstable light emitted by LED bulbs during operation, which may show frequent flashing or flickering. This situation can cause discomfort and affect visual effects.

II. What are the reasons for LED Bulb Flickering?

  • Power supply problems: Fluctuations in power supply voltage or poor power supply quality can cause LED bulbs to flicker.
  • Bulb problems: Low-quality or aging LED bulbs are prone to flicker.
  • Lamp fixture problems: Poor quality, poor contact, or aging of lamp fixtures can cause bulb flickering.
  • Switch problems: Improper use or aging of switches can affect the normal operation of bulbs and cause flickering.

III. How to Solve LED Bulb Flickering Problems?

  • Replace the power supply: If the power supply voltage connected to the LED bulb fluctuates significantly, consider replacing the power supply.
  • Replace the bulb: If the flickering problem is caused by low-quality or aging bulbs, consider replacing the bulb.
  • Replace the lamp fixture: If poor quality, poor contact, or aging of lamp fixtures cause flickering, consider replacing the lamp fixture.
  • Replace the switch: If improper use or aging of switches affect the normal operation of bulbs, consider replacing the switch.

In addition, using a power supply with overload protection function can also avoid flickering problems caused by power supply voltage fluctuations. If LED bulb flickering occurs, it is recommended that users start with the above four aspects and troubleshoot the problem one by one.

IV. Will LED Bulbs Flicker Before Burning Out?

LED bulbs will not flicker before burning out like traditional incandescent bulbs. However, LED bulbs may flicker when approaching the end of their lifespan due to LED chip aging. Therefore, if users frequently encounter flickering with LED bulbs, it is recommended to replace them in a timely manner to avoid damaging other equipment or causing more serious problems.

V. Why Do LED Bulbs Flicker When Not Dimmed?

LED bulbs may flicker when not dimmed due to the following reasons:

  • Unstable power supply voltage or poor power supply quality.
  • Poor circuit design or circuit aging.
  • Poor quality or aging of the LED bulb itself.
  • LED bulbs don’t work well with switches and other electrical components.

Users can consider replacing the power supply, the lamp fixture, or the LED bulb with a high-quality one if this problem occurs. Additionally, flickering issues brought on by power supply voltage variations can be avoided by using a power supply with an overload protection function.

VI. How Can You Tell If An LED Bulb Is Damaged?

When inspecting the LED bulb, look for visible symptoms of damage, such as cracks, deformations, or discoloration. If you see any of these, the LED bulb is certainly damaged.

Looking at the light the bulb produces: If the light changes hues, becomes dull, or flickers, the LED bulb is likely damaged.

Using testing tools: To check the functionality of the LED bulb, use a voltage metre, a multimeter, and other testing tools.

To assess whether an LED bulb is damaged, utilise one of the three methods listed above. In the majority of instances, consumers can check for any strange events by initially noting the appearance and light output of the bulb. If there are, testing equipment can be utilised to determine whether the LED bulb has to be replaced or not.

VII. Will Cheap Bulbs Cause Flickering?

Cheap LED bulbs may not necessarily cause flickering, but low-quality LED bulbs are prone to flickering and other problems during use. It is recommended that users purchase LED bulbs with high brand recognition and quality assurance to avoid flickering and other issues.

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VIII. What is the lifespan of an LED bulb?

The lifespan of an LED bulb is affected by a variety of factors, including its quality, structure, and environment. Before selecting an LED light, make sure you will be content in the long run.

High-quality LED bulbs provide a reliable and secure light source with an average lifespan of 30,000–50,000 hours. Consider a period of time during which you don’t change your LED bulbs. You may benefit from the fun and convenience of long-lasting, high-quality lighting by spending money on reputed brands and picking durable fixtures.

IX. How often do LED lights flicker?

The frequency of LED bulb flashing is typically 100–120Hz since LED bulbs require AC energy, which has a frequency of 50–60Hz, to operate. The distinctive design of LED bulbs causes constant variations in current and voltage to take place throughout each cycle, which causes flickering.

Due to LED bulbs’ constant flashing, certain sensitive users may endure headaches, eye fatigue, and other issues. To avoid this issue, consumers can choose LED bulbs with higher frequencies, such as those up to 300Hz, which have a higher flicker frequency and are better suited for users who are sensitive.

X. How to Avoid LED Bulb Flickering Problems?

To avoid LED bulb flickering problems, users can take the following measures:

  1. Choose high-quality LED bulbs. LED bulbs with high brand recognition are generally more reliable.
  2. Pay attention to the compatibility of the bulb with other devices such as the power supply and lamp fixtures to avoid flickering caused by device mismatch.
  3. Pay attention to the usage environment of the bulb and avoid using LED bulbs in harsh environments such as high temperature, humidity, and dust, which can extend the lifespan of the LED bulb and avoid flickering problems.
  4. Regularly check the status of LED bulbs and replace aging or damaged LED bulbs in a timely manner to avoid flickering problems when the bulb reaches the end of its lifespan.
  5. Use a power supply with overload protection function to avoid flickering problems caused by power supply voltage fluctuations.

As a brand in the lighting industry, KOSOOM has years of lighting experience which has shown that consumers often complain about the flickering of LED bulbs. However, if they can identify the cause of the problem and take appropriate steps, it may be possible to resolve it.

We recommend that customers purchase high-quality and durable LED bulbs from reliable sources instead of low-quality and short-lived ones to improve their user experience. If you encounter any problems, please feel free to consult KOSOOM’s staff, and we are always ready to provide you with assistance. For more information about our products and services, please visit our homepage.

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