If you do not charge the juice cup, first check whether the charging jack is inserted backwards or damaged, and try to replace the new charging jack. Then check whether the mains socket is powered on, no power will lead to no charge. Then check whether the power line is broken, whether the motor is damaged and whether the control circuit has components burned out, and handle according to the specific situation.
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Because the juice cup often contacts water, juice and other liquids, it is easy to make the liquid flow into the housing, resulting in short circuit of the components on the control board, so it is also important to check the control board.