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HomeRepair HelpAdmiral Microwave RepairAdmiral Microwave is tripping circuit breaker Repair
Admiral Microwave is tripping circuit breaker
When your Admiral microwave is tripping the circuit breaker, especially when you open or close the door, start with the door switches. A failed primary door switch, secondary door switch, or monitor switch can create a short, blow the line fuse, or make the microwave keep tripping the breaker. Test each switch for continuity and replace any switch that fails, but remember that opening the cabinet requires caution. The next likely cause is a shorted high-voltage capacitor, followed by a shorted magnetron. A failed high-voltage transformer is less common, but it may arc or produce a burnt smell when it shorts. These high-voltage parts can contain lethal electrical charge. The high-voltage capacitor stores thousands of volts even after the microwave is unplugged, so it must be properly discharged before interior work. If you are not familiar with capacitor discharge procedures, have a qualified technician handle this repair. Enter your Admiral microwave model number to find the exact replacement door switch, high-voltage capacitor, magnetron, or high-voltage transformer for your specific appliance.
01 - Admiral Microwave 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 fail, the microwave line fuse can blow, or the circuit breaker may trip. 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 lack continuity, replace the defective switch. (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 potenti...
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02 - Admiral Microwave High Voltage Capacitor
A microwave that is tripping a circuit breaker can be caused by a shorted high voltage capacitor. You can determine that a capacitor has shorted by contacting one multimeter lead to one of the capacitor's terminals and the other lead to the casing. If meter display indicates that electrical continuity is present between any of the capacitor terminals and the casing, or the terminals show continuous continuity between them, the component has shorted and will need to be replaced.
Uncommon But Possible
03 - Admiral Microwave Magnetron
A microwave that is tripping a circuit breaker can be caused by a shorted magnetron. You can determine that a magnetron has shorted by contacting one multimeter lead to one of the magnetron's terminals and the other lead to the casing. If meter display indicates that electrical continuity is present between any of the terminals and the casing, the magnetron has shorted and will need to be replaced.
Uncommon But Possible
04 - Admiral Microwave High Voltage Transformer
A microwave that is tripping a circuit breaker can be caused by a shorted high voltage transformer. When a high voltage transformer shorts out, it will usually arc and smell burnt.
Uncommon But Possible
Frequently Asked Questions
Why is my Admiral microwave tripping the circuit breaker when I open the door?
What should I check first when my Admiral microwave keeps tripping the breaker?
Can a high-voltage capacitor, magnetron, or transformer cause an Admiral microwave to trip the breaker?
Is it safe to use my Admiral microwave if it trips the breaker or smells burnt?
How do I find the correct replacement door switch or other Admiral microwave part?
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