My family LED3 head mirror headlight is very bright, recently suddenly flashing a few times, it became dark, and still can shine after the light, but can not play the role of lighting.
From the failure phenomenon you see, is the power supply line due to poor contact, you check the power connection may find problems, strengthen the connection can be eliminated; the other is that the supply voltage is low, the LED is working in a certain voltage range to keep bright.
It is possible that the switch power is broken, and LED is good. Here you are. It can be used for ten years. If you guarantee, change it. If you don't want it, buy it. If you don't want it, let somebody fix it
Replacement method:1. Remove the lampshade from the headlight of the mirror,2. Remove the tube and replace the new tube.
When the LED3 mirror flashes several times, it becomes dark. If it is still in this state, it is usually caused by a decrease in the luminous flux of the tube. New lights need to be replaced.