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HomeRepair HelpKenmore Microwave RepairKenmore Microwave shuts off after a few seconds Repair

Kenmore Microwave shuts off after a few seconds

If your Kenmore microwave shuts off after a few seconds, the most likely cause is a failing door switch or micro switch. Inspect the primary door switch, secondary door switch, and monitor switch for overheating, arcing, or burned terminals, then test each switch for continuity with a multimeter. Replace any switch that is visibly damaged or has intermittent continuity. If the switches test correctly, the main control board is the next likely cause, although control boards are often misdiagnosed and should be checked only after the door switches and other components work properly. A defective touchpad and control panel can also make a microwave stop after 3 seconds, especially when the display works but some buttons respond and others do not. A standalone touchpad can cause the same symptom, but this is less common. Before replacing parts, note when the microwave turns off and whether the controls remain responsive. Enter your Kenmore microwave model number to find the exact replacement part for your appliance. Any repair that requires opening the outer cabinet exposes a high-voltage capacitor that can store a lethal charge even after the microwave is unplugged. Properly discharge the capacitor before interior work, or use a qualified technician if you are not familiar with the procedure.

01 - Kenmore Microwave Door Switch

A door switch might be failing intermittently. Check each of the door switches for signs of overheating, arcing, or burning. If you don’t see any obvious signs of failure, use a multimeter to test each switch for continuity. If any of the switches is visibly damaged or only has intermittent continuity, replace it.
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Top Solution

02 - Kenmore Microwave Micro Switch

A micro switch might be failing intermittently. Check each of the micro switches for signs of overheating, arcing, or burning. If you don’t see any obvious signs of failure, use a multimeter to test each switch for continuity. If any of the switches is visibly damaged or only has intermittent continuity, replace it.
Shop all Kenmore Microwave Micro Switch Parts
Top Solution

03 - Kenmore Microwave Main Control Board

Control boards are often misdiagnosed—before replacing the control board, first check more commonly defective parts, particularly the door switches. If all of the other components are working properly, replace the control board.
Shop all Kenmore Microwave Main Control Board Parts
Top Solution

04 - Kenmore Microwave Touchpad and Control Panel

To determine if the touchpad and control panel are defective, try pressing each of the buttons on the control panel. If some of the buttons respond correctly while others don’t, replace the touchpad and control panel.
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Highly Likely

05 - Kenmore Microwave Touchpad

If the microwave runs for a few seconds and stops the touchpad might be at fault. This is not common. Generally speaking, if the microwave display is working and some of the buttons respond correctly but some don’t, the problem is with the touchpad.
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Highly Likely

06 - Kenmore Microwave Control Board

Control boards are often misdiagnosed—before replacing the control board, first check more commonly defective parts, particularly the door switches. If all of the other components are working properly, replace the control board.
Shop all Kenmore Microwave Control Board Parts
Common

Frequently Asked Questions

Why does my Kenmore microwave shut off after a few seconds?
How do I test a Kenmore microwave door switch that keeps shutting off?
Could the Kenmore microwave touchpad or control panel cause it to stop after a few seconds?
Should I replace the Kenmore microwave control board if it keeps turning off?
How do I find the correct Kenmore microwave part for this repair?

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