LED flashlight fault repair

- Oct 23, 2018-

The LED flashlight is a new type of flashlight with LED (Light Emitting Diode) as the light source. Because LED has high brightness, low power consumption, long life and small size, it is an ideal choice for portable lighting.
1. LED dead light does not shine, you can replace the LED, but pay attention to ± polarity can not be reversed.
2. The lead-acid battery is damaged, resulting in failure to charge and discharge.
3. The high voltage step-down capacitor is damaged, or the rectifier diode is over-voltage damaged, which can not be charged. At this time, the ordinary pointer type universal meter can detect and solve the problem.
4. The pull switch is not in good contact or damaged and cannot be turned on.