These types of capacitors are most often affected by defects. They age by drying out or crystallizing the electrolytes. This even applies to electrolytic capacitors (electrolytic capacitors) that are not installed and are stored in the drawer. Therefore, you should never immediately put old devices and electrolytic capacitors under full voltage, because they will burst in 80 percent of the cases and cause a huge mess. To revive old stored electrolytic capacitors, it is better to form them with a slowly increasing DC voltage over several hours. And in order not to destroy installed electrolytic capacitors in old electronic devices, the operating voltage is slowly increased via a control transformer.

Since defective electrolytic capacitors tend to outgas, they have a predetermined breaking point through which the gas inside can escape.