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Four Common Faults and Solutions of LED Switch Power Supply

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.03.28
LED switch power supplies are widely used and ubiquitous in our daily lives and work. However, there may be some problems and malfunctions in the actual use of LED switch power supplies, which may cause damage to the power supply and LED lights. This article will introduce common faults and solutions of LED switch power supplies.




1. Unstable output current

The unstable output current of LED switch power supply is usually caused by damage to capacitors and power components, poor soldering of circuit boards, and other reasons, which can easily cause problems such as LED flashing and insufficient brightness.

Solution: The fault can be resolved by replacing damaged components and capacitors, repairing or replacing the circuit board.

2. Abnormal input and output voltage

Abnormal input and output voltage may cause problems with the LED switch power supply. Excessive input voltage may damage power components, while insufficient input voltage may cause unstable output voltage. Abnormal output voltage may be caused by power overheating, power overload, undervoltage, or overvoltage.

Solution: It is necessary to repair the power cord or connecting circuit to ensure that the input voltage is within a reasonable range; Ensure that the output voltage is normal by replacing a high-power power supply that meets the load requirements.

3. Thermal damage

One of the faults of LED switch power supply is that the power supply is damaged due to high temperature, which affects the use of the power supply.

Solution: Check the heat dissipation of the LED switch power supply, optimize the heat dissipation design, and ensure good ventilation in the working environment.

4. The fuse is blown

Usually, the fuse of LED power supply is blown due to the instantaneous increase of current in the power supply under high voltage and high current conditions.

Solution: Replace with a new and suitable fuse. Check if the components of the LED switch power supply are damaged, such as rectifier diodes, high-voltage filtering electrolytic capacitors, etc. In addition, check for any damage to the components on the circuit board.

In summary, the main faults of LED switch power supply include unstable output current, abnormal input and output voltage, thermal damage, and blown fuses. When there is a power failure, the specific cause should be detected and corresponding measures should be taken to solve it. During the process of handling the fault, safety must be taken into consideration.
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