With the development of LED technology in lighting industry, the high pressure sodium light source used in road lamp is gradually eliminated. LED light source is widely used in outdoor road lighting because of its advantages of high brightness, low energy consumption and power saving. Now many people prefer to use LED street light, because it has many advantages. But we know that no matter what kind of streetlights are likely to encounter some failures, what should we do when we encounter these failures? How to prevent it?

　　Fault one, LED street light is not on

　　LED street lights do not light this problem is really worrying, so how should we prevent and solve this problem? First of all, we should check the circuit in the LED streetlights to see if there is a short circuit or the contact is not bright. If no problem is found after the circuit check, it is the problem of the driving power supply. The driving power controls the voltage and current of LED street lamp. If the voltage and current are too large or too small, the LED street lamp will not be on. At this time, we should replace a new drive power supply, and try to choose brand power supply, such as maoshuo or Mingwei. The probability of failure of this drive power supply is smaller than that of other power supplies.

　　Fault two, LED street light brightness dim

　　The dimming of LED street lamp may be due to the poor quality of LED chip inside the light source. When we choose LED street lamps, we try our best to ask street lamp manufacturers to use imported LED chips. In addition, the dimming of LED street lamps may also be due to the burning of some lamp beads inside the light source. In this case, we should consider the capacitance or resistance of LED street lamps.

　　Fault three, LED street lights flicker after lights out

　　If the light source is still flashing after the LED street lamp is off, this situation may be caused by the self induced current generated by the LED street lamp itself. To solve this problem, we need to buy a 220 V relay, connect the coil with the light source in series, and the LED street lamp will not light up.

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