Microwave power will just happen , that a blown fuse failure . Now introduce the troubleshooting method .k5zservice manual download site

    Microwave circuit is divided into two parts of the power supply control systems and high-pressure systems. Overhaul can be bounded by high-voltage transformer , disconnect the secondary circuit , in order to quickly determine the fault location, while ensuring the safety overhaul .k5zservice manual download site

    First open the microwave enclosure , high voltage transformers and high-voltage capacitors to find , because the secondary circuit is connected with the connector , so you can simply unplug the plug , very convenient. At this time replacing the fuse is energized , the following two cases.k5zservice manual download site
 k5zservice manual download site
Fans and trays were normal operation (1 ) is energized . This indicates that the power control system and transformers intact, failure in high-pressure systems. Can continue to check high-voltage capacitors and high voltage diodes, high voltage capacitors have breakdown if found , it means the machine is the cause of the blown fuse transformer secondary circuit current is too large. After replacing with the specifications of capacitor failure can be ruled out.k5zservice manual download site
(2 ) After the machine is powered again blown fuse . High voltage circuit which can determine the normal system , or a fault occurs in the transformer power supply control circuit itself . Unplug the transformer primary circuit can plug one end , after power if the fan tray is operating normally , indicating that the transformer is damaged. Failure may be inter- turn short circuit transformer windings , replace the transformer failure can be ruled out. If you unplug the plug after the transformer primary circuit through the motor inside the fuse still blows, then the fault must have occurred in the power control system. Interlock switch may be the cause of the malfunction , monitor switch is damaged , the power cord or wire caused severe leakage or short circuit . As long as these components by simply checking the fault can be found , exclusion or replacement components , microwave to resume normal operation .

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