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Smeg FM24 900 Watts Microwave Oven Questions & Answers
Smeg microwave convectio/grill oven model SA987CX does not preheat
If your microwave oven doesn’t heat, you may have a problem with the high voltage diode or rectifier. This component helps provide the high voltage that powers the magnetron. The high voltage diode is located near the magnetron and the high voltage capacitor, so access will require removal of the cabinet. Disconnect the power and also discharge the high voltage capacitor to prevent an electrical shock. You can then test the diode for continuity with a multi-meter. Diodes are polarity specific and you should see low resistance with the meter leads in one direction and higher resistance when the meter leads are reversed. Most multi-meters will have a special setting for diodes or rectifiers. If the high voltage diode shows low resistance in both directions or shows no continuity at all, then it will need to be replaced. If you find the high voltage diode tests okay, then you will need to determine whether power is being supplied to the circuit. This is a high voltage circuit and further testing should only be performed by a qualified technician.
Smeg microwave shorting
If it's the circuit breaker in your house or apartment that's blowing, then either you are overloading the circuit, or you have a bad breaker. Check to see what other devices might be plugged into that circuit, and move as many of them as possible to a different circuit. If you need further help, I’m available over the phone at
https://www.6ya.com/expert/david_29ad5d1dd86564b0
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