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Estate Microwave won't turn off

If your Estate microwave won't turn off, keeps running, or seems stuck on after you press Cancel or Off, start with the door switches. A failed door switch can short out and allow the fan to run even when the door is open. Test the door switches for continuity, including the primary door switch, secondary door switch, and monitor switch, and replace any switch that lacks continuity. Next, the user control and display board may not be registering the Cancel or Off button. If none of the control panel buttons respond correctly, replace the user control and display board. If only some buttons fail, the touchpad and control panel or the separate touchpad may be defective. A failed main control board is less common, but a shorted relay or triac can keep microwave components powered after the controls are turned off. Enter your model number to find the exact replacement part for your Estate microwave. Any repair that requires opening the outer cabinet must be handled carefully because the high-voltage capacitor can store a lethal charge even after the microwave is unplugged. Proper capacitor discharge is required before interior work, so this repair may require a qualified technician if you are not familiar with that procedure.

01 - Estate 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 will not start or heat. In some rare cases a door switch may short out and allow the fan to run even when the door is opened. 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 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 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.)

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02 - Estate Microwave User Control and Display Board

The cancel or off button on the user control and display board may not be activating. To determine if the control and display board is defective, try pressing each of the buttons on the control panel. If none of the buttons are responding correctly, replace the user control and display board.

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Highly Likely

03 - Estate Microwave Touchpad and Control Panel

The cancel or off button on the control panel may not be activating when it's pressed. 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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Common

04 - Estate Microwave Touchpad

The cancel or off button on the touchpad may not be activating. To determine if the touchpad is 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.

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Common

05 - Estate Microwave Main Control Board

The main control board has relays that send power to several components to make the microwave work. If one or more of the relays or triacs short out, some of the components can keep running when the controls are turned off. (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 the main control board.)

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Common

06 - Estate Microwave Control Board

The control board has relays that send power to several components to make the microwave work. If one or more of the relays or triacs short out, some of the components can keep running when the controls are turned off. While you can often replace just the control board, some microwave models sell control panels as an assembly with both the touchpad and control board included.

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Uncommon But Possible

Frequently Asked Questions

Why won't my Estate microwave turn off?

Why does my microwave turn on by itself or keep running when the door opens?

How do I test an Estate microwave door switch?

Could the microwave buttons or touchpad be keeping it running?

How do I find the correct Estate microwave control board or door switch?

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