First, detect the solar street lamp controller, the controller is the core of the solar street lamp. The red light means that it is charging, and the flicker indicates that the electricity is full. If it is a yellow light, it means a loss of electricity.
At this point, the battery voltage of the solar street lamp should be detected. If the battery is normal, then change the new controller to see if it is normal, if it is normally determined that the controller is bad. If the light is not bright, check the connection is not shedding.
    Second, if the controller is out of trouble, the next step is to check whether the solar panel can be charged or not, which is usually not charged with a voltage and no current. At this point, it is necessary to detect the weld of the battery plate.
Then, the aluminum foil on the battery board has no current. If there is no current, it is basically decided that the battery panel has been scrapped. If there is electric current on the solar panel, pay attention to whether there is snow cover and can not charge.
    Third, batteries are also prone to failure. The batteries used by many manufacturers are not waterproof, which leads to short circuit of positive and negative poles after battery enters water, resulting in unstable voltage. Watch the battery carefully when testing
If the voltage changes with the depth of the discharge, if it can not be used normally, it will need to replace the new one.
    Fourth. Finally, check whether there is any damage to the line. If the insulation layer is worn and the current is transmitted through the lamp post, it will cause short circuit, and the lamp will not light up. By the way, some solar streetlights are bright in the daytime.
It's not going to shut. 80% of this is the burning of the controller element.
    The above is about the solar street light does not light some of the fault detection and maintenance methods, but the maintenance of solar street lamps is the work of professional staff, we do not private to help repair the solar street lamp, it is better to wait for repair personnel to repair it.