DescriptionThis video provides step-by-step repair instructions for replacing the main control board 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 Main Control Board Replacement
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You will need a phillips-head screwdriver, a putty knife and a magnetized 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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Unthread the screw securing the control assembly.
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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.
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Remove the assembly, then unthread the four screws securing the control board.
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Disconnect the ribbon connecter and lift out the old board.
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Install the new main control board by aligning it on the mounting plate then thread the screws to secure.
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Connect the ribbon connecter to the new board.
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Insert the control assembly tabs into the slots in the microwave oven frame and connect all of the control board wire connecters to the appropriate terminals.
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Align the control 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.