2, may be the drive power is bad, as long as the replacement of another good drive power, it will not flash.
3, if the drive has the function of over-temperature protection, and the material heat dissipation performance of the lamp can not meet the requirements, the drive over-temperature protection will start to work and there will be a flicker and off phenomenon, for example: 20W floodlight shell is used to assemble 30W lamps, and the heat dissipation work is not done.
4, if the outdoor lamps also have a stroboscopic phenomenon, that is, the lamp is in the water. The result is that it flashes and it doesn't light up. The lamp bead and the drive are broken, and if the drive waterproof is done well, it is just to break the lamp bead and replace the light source.