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HomeRepair HelpQuasar Microwave RepairQuasar Microwave shuts off after a few seconds Repair

Quasar Microwave shuts off after a few seconds

When your Quasar microwave shuts off after a few seconds, stops after 3 seconds, or keeps shutting off during a cycle, start with the door switches. A failing door switch can lose continuity intermittently, especially if it shows overheating, arcing, or burn marks. Next, check the micro switches for the same damage and test each switch with a multimeter. Replace any switch with intermittent continuity or visible damage. If the switches test good, the main control board may be causing the microwave to turn off after a few seconds, although control boards are often misdiagnosed and should be checked only after more common parts are ruled out. A defective touchpad and control panel is more likely when some buttons respond and others do not. The touchpad alone can also cause this symptom, particularly when the display works but certain buttons are unresponsive. Any repair that requires removing the outer cabinet must be handled carefully because the high-voltage capacitor can store a lethal charge even after the microwave is unplugged. It must be properly discharged before interior work, and a qualified technician should perform the repair if you are unfamiliar with capacitor discharge procedures. Enter your Quasar microwave's model number to find the exact replacement part.

01 - Quasar 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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02 - Quasar 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.
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03 - Quasar 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.
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04 - Quasar 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 - Quasar 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 - Quasar 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.
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Common

Frequently Asked Questions

Why does my Quasar microwave shut off after a few seconds?
Could the touchpad or control board cause my microwave to stop after 3 seconds?
Is it safe to test a Quasar microwave that keeps shutting off?
How do I find the correct Quasar microwave door switch or touchpad?
Why does my microwave turn on or run with the door open?

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