Check the fuse, power switch are normal, measuring microprocessor IC1 power supply terminal 41 feet to 20 feet voltage is 0V, under normal circumstances, should be-10V, the fault is due to the non-working power IC1 caused. The voltage regulator circuit of the washing machine-10V power supply circuit, the output of the transformer T secondary alternating voltage D1, D2 full-wave rectifier, C4 filtered DC line voltage-20V,-20V DC voltage VT1 and the peripheral components via the obtained after-10V DC voltage supply to the
2 1 2 Next Last |