1. When assembling, the anti-static work is not done well, so that the inside of the LED has been damaged by static electricity. Although the normal voltage and current values are applied, it is very easy to cause damage to the LED,
2. The voltage of the current is unstable, and the increase of the power supply voltage is particularly easy to cause the destruction of the LED lamp. There are many reasons for the sudden increase of the voltage, the quality of the power supply, or the improper use of the user to increase the power supply voltage.
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3. The heat dissipation effect of the lamp is not good. We all know that the light emission of the lamp tube is a process of heat dissipation. If the temperature in the lamp is too high, it will easily deteriorate the characteristics of the LED. This is also easy to cause damage to the LED lamp.
4. It is also possible that the LED has been damaged due to its own quality and has formed a short circuit, and its original voltage drop is transferred to other LED light sources.
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5. It is also possible that water has entered the lamp, because the water is conductive, which will short-circuit the circuit of the lamp and the lamp will not work.
6. The power supply path of the lamp tube is partially short-circuited. This situation is usually caused by a component in the line or the short-circuit of other wires which increases the voltage in this place.
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Turn it on and check it. If there is dim light when turning on the light, you can find out if there is a single LED completely dull. You can continue to use it. Another situation is that the driving power supply is broken, and the corresponding driving power supply is replaced.
To repair the LED lamp, you can use a flat screwdriver to carefully pry open the metal screw of the lamp cap of the LED bulb and the main plastic joint of the bulb, and keep it intact to facilitate the restoration after repair. After opening, first check the electronic components of the conversion part, if there is no problem, then power on and check its output voltage.
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