What about the damage to the ultrasonic cleaner's transducer?
The internal ceramic of transducer will break because of long-term use, so that it can not work properly.
The insulation strength of the transducer is measured by a shake meter. The insulation strength is below 200M. The transducer has not been used. The transducer must be replaced
May be used for a long time in the boot, the temperature will gradually rise, resulting in melting of the gel, transducer or ceramic part of the broken transducer