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== no heat . My microwave just stopped heating. It turns on but no heat. Is there a fuse that can be replaced?==
https://www.repairclinic.com/RepairHelp/… Cause 1 Diode 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.) Parts Diode for your KenmoreMicrowave Diode - Part # 1522339 Mfg Part # 6851W1A002E RepairClinic Item #1522339 Microwave diode assembly $5.16 Quantity: In Stock › Same Day Shipping Order by 8:00 PM ET, this part ships TODAY! 365-Day Return Policy Return any item for any reason within 365 days of placing your order.Find out more » Total: $5.16 ADD TO CART Cause 2 Door Switch Most microwaves have three or four door switches. When the microwave door closes, the door switches actuate in sequence to ensure that the door is closed properly. If any of the door switches fails, the microwave will not start or heat. To determine if any of the door switches are defective, use a multimeter to test each of the switches for continuity. If any of the door switches does not have continuity, replace it. (Caution: The microwave oven can store thousands of volts of electricity in its high voltage capacitor, even after the microwave oven has been unplugged. Due to the potential for electric shock, it is extremely dangerous to replace the electronic components in a microwave. Only a licensed technician should replace a door switch.) Part Testing Parts Door Switch for your KenmoreMicrowave Door Switch - Part # 1325771 Mfg Part # 3B73362F RepairClinic Item #1325771 Microwave door switch. This switch is normally open. When the microwave door is shut, the door switches close to send power to the microwave. If this switch fails, the microwave will not start. $3.85 Quantity: In Stock › Suggested tools Multi Screwdriver RepairClinic Item #3527472$14.95 Same Day Shipping Order by 8:00 PM ET, this part ships TODAY! 365-Day Return Policy Return any item for any reason within 365 days of placing your order.Find out more » Total: $3.85 ADD TO CART Cause 3 Magnetron The magnetron uses high voltage, high current DC power to generate the microwave frequency that cooks the food. If the magnetron burns out, the microwave won’t heat. The magnetron is not repairable—if the magnetron is burned out, you must replace it. (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 magnetron.) Parts Magnetron for your KenmoreMicrowave Magnetron - Part # 1292196 Mfg Part # 2B71732G RepairClinic Item #1292196 Magnetron $108.75 Quantity: Out of Stock Click for Expected Ship Date › 365-Day Return Policy Return any item for any reason within 365 days of placing your order.Find out more » Total: $108.75 ADD TO CART
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