Hello, the specific address is Guangzhou Little Swan Washing Machine Maintenance Department-Address-No.11 Tianhe Street.
Address: No.12 Nanyuan Street, Haizhu District, Guangzhou, Guangdong
If it is the following two simple faults, you can solve them yourself.
Cygnet automatic washing machine does not work (1)
Fault phenomenon: when the power supply is connected, the indicator light does not light up and the washing machine does not work.
Detection and judgment: the washing machine is not working, and the power indicator light is not on. Generally, the power supply system is faulty. Check in the following order. First, check that the control system circuit and power input socket have AC voltage of 220V, indicating that the input terminal is normal. The voltage of the secondary winding of the transformer is 8V measured by the multimeter with AC 25V gear, indicating that the transformer is normal. It is normal to measure the voltage at both ends of C2 with a multimeter at DC 25V. It is suspected that the voltage regulator VT1 is defective, and the emitter and base voltages of VT1 are by multimeter, indicating that it has been damaged. Maintenance method: After replacing the same type of voltage stabilizing tube (2SD651), troubleshoot.
Overhaul experience: If the voltage regulator VT1 is normal, you can further measure the voltage of pin 12 of the single chip microcomputer IC (DJ 2001), and pin 12 is the power input pin. If it is , it is usually the capacitor Cll, C12 or crystal oscillator (TJ) that is damaged.
Cygnet automatic washing machine does not work (2)
Fault phenomenon: After power on, press any operation key, and the washing machine will not operate or work. Detection and judgment: From the fault phenomenon analysis and power-on, firstly, the voltage of the related pins of the 14021WFW microprocessor was measured, and it was found that the power supply voltage of 26 pins was OV, but the DC voltage across the filter capacitor C7 was 12V, which was normal. Then, the working voltage of each pole of the regulator BG11 was detected, and its emitter voltage was OV. , check BG11, D6, C5, C6, C1 and other related components one by one, and find that capacitor C5 has been broken down. Maintenance method: after replacing the capacitor C5 of the same model, commissioning and troubleshooting.