The method to judge the quality of the capacitor:

Electrolytic capacitors may fail due to excessive discharge or depletion of electrolyte and failure to charge. The following is the method to judge the quality of the capacitor: 1. Multimeter method to check the quality of the capacitor This is the most common method Put the switch of the multimeter on the R×10kΩ or R×1kΩ electrical [...]