DescriptionThis video provides step-by-step repair instructions for replacing the transformer cut-off on a Frigidaire microwave oven (Model FFMV1645TSA). The most common reason for replacing this part is if the microwave is not working 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 Transformer Cut-Off Replacement
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You will need a phillips-head screwdriver, a putty knife, a short phillips-head screwdriver anf a magnetized screwdriver (optional) 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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Unthread the screw securing the control assembly.
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With the screw unthreaded, lift the control assembly up to detach.
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Note the orientation of the wires connected to the control board, then disconnect them to fully remove the assembly.
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Disconnect the two wires from the transformer cut-off.
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Use a short phillips-head screwdriver to unthread the mounting screw securing the component.
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Slide the old transformer cut-off back to remove.
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Install the new transformer cut-off by positioning it in the base, then thread the screw to secure.
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Connect the wires to the terminals.
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Reinstall the control assembly by inserting the assembly tabs into the slots in the microwave oven frame, then connect all of the control board wire connecters to the appropriate terminals.
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Align the assembly and push down.
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Thread the screw ? having a magnetized screwdriver will make this easier.
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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.