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Magic Chef MCM1290A Microwave Oven Questions & Answers
Will run but not heat
check the door switches ... they are probably burned preventing preventing the machine from knowing the door is closed.
No power in microwave - vm11b8p magic chef
The incoming power wire goes onto a small pc board, the fuse is located onto that small pc board. If it is not visible then you have to remove it and turn the board around. You should locate it on the other side
My sister operated the Magic Chef Microwave, Model MC0165UB, without any food inside and now it won't heat. What is the likely problem?
The diode converts the A/C power output of the transformer to D/C, doubling the voltage to nearly 5,000 volts. This high voltage powers the magnetron to heat the food. If the diode burns out, the magnetron won't receive enough voltage to operate, preventing the microwave from heating. When the diode fails, it is often visibly burned out. Inspect the diode and if the diode is burned out, replace it. If inspecting the diode proves inconclusive, test it with a multimeter that uses a 9-volt battery or put a 9-volt battery in series with the diode. When the leads are reversed, the diode should only have continuity in one direction. (Warning: The microwave oven can store a lethal amount of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the high running voltage and the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace the diode.)
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