The whole light is off. Led solar garden light is used for outdoor lighting, and it is often encountered in high temperature and rainy, low temperature rain and snow. The led solar garden light controller is usually installed in the light pole, which easily causes the short circuit phenomenon of water entering the controller. First observe whether there are water traces and rust on the terminal of the controller (the terminal of the controller should be facing down when installing), if it is very likely that the controller is damaged, no battery voltage measurement (prepare a multimeter), 

such as 12Vled In the solar garden light power supply system, if the battery voltage is lower than 10.8V, the battery is no longer storing electricity. You need to replace or unplug the lamp cap to allow the solar panel to charge the battery. Then check whether there is voltage and current output under normal working conditions of the folding sky battery board. If the battery board is damaged, replace the battery board. None of the above is a problem, you should check the light source, and only supply power to the light source to see if it is on. If it is not on, replace the light source.