1. Reasons why the LED flashlight does not light up:
2. The filament is broken, and no current flows through the filament of the lamp, so the lamp does not light up.
3. The battery power supply is insufficient, the current passing through the lamp is too small, and the actual power of the lamp is too small to emit light.
4. The light bulb is short-circuited, no current flows through the light bulb, so the light does not light up.

powerful torch

Solution:

Replace the battery with the same type. If it still does not light up after replacing the battery, further inspection is required.

Find a piece of metal, or a key if you don’t have one, and connect the negative pole of the battery to the shell of the flashlight. If the self-defense flashlight can light up, it means that the flashlight switch is broken. If it still doesn’t light up, it means there is something wrong with the lamp head. There is generally no need for maintenance if the lamp tube of the lamp holder is broken, but it can be easily repaired if the switch is broken.

Cross two nails so the inner switch can be unscrewed and cleaned or replaced depending on damage.

led explosion-proof flashlight

2. The flashlight is not on. Please check the following methods?
3. Make sure that the battery of the mobile phone is sufficient. When the battery is too low, the “flashlight” will not be turned on by default. Charge the mobile phone to more than 15% and try again.
4. Make sure that the temperature of the phone or the flash is not high. When the temperature of the phone or the flash is too high, the phone will trigger overheating protection, and the “flashlight” will not be turned on by default. Wait until the temperature of the phone drops and try again.
5. Make sure that the flash light is not occupied by other programs. Make sure that the application that needs to call the fill light is not opened. If you are not sure whether it is opened, try to clean up the memory or restart.