DescriptionThis video provides step-by-step repair instructions for replacing the cavity thermostat on a Frigidaire microwave oven (Model FFMV1645TSA). The most common reason for replacing this part is if the microwave will not work at all.
All of the information for this video is applicable to the following brands:
Frigidaire
Step-By-Step Instructions1
Frigidaire Microwave Oven - Model FFMV1645TSA
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Microwave Oven Cavity Thermostat Replacement
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You will need a phillips-head screwdriver, a putty knife and a small flat-head screwdriver for this procedure.
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Be sure to unplug the power cord or shut off the power supply.
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Open the door and use a phillips-head screwdriver to unthread the two screws securing the front vent.
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You can use a putty knife to help pry the vent off.
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Use a small flat-head screwdriver to pull down the cavity thermostat access panel.
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Reach in and slide the thermostat forward to detach, then disconnect the two wires.
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Install the new cavity thermostat by first connecting the wires to the terminals, then slide the thermostat back to secure it in the slot in the cavity liner.
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Positioned properly, the thermostat should be visible through the small hole in the liner.
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Secure the access panel in the tabs.
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Reinstall the front vent by aligning the top edge first then press the bottom edge into place.
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Thread the screws to secure.
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Plug the power cord back in or restore the power supply.
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Congrats! Your microwave oven is ready for use.