1. Poor contact of power cord: Please check whether the power plug is plugged in properly and whether the power cord is in poor contact. You can try plugging and unplugging the power plug again or replacing the power cord with a new one.

2. Capacitance fault: Capacitance is an important component in the circuit of soymilk machine. Capacitor failure will lead to flashing lights and dripping sound. Consider replacing it with a new capacitor.

3, the motor bearing is stuck: the motor bearing of the soymilk machine is stuck, which will lead to flashing lights and dripping sound. The machine can be disassembled to check whether the motor bearing is stuck, and can be repaired or replaced.