DescriptionThis video provides step-by-step repair instructions for replacing the magnetron sensor on a Kitchenaid microwave (Model #KMBP100ESS01). The most common reason for replacing the sensor is if the microwave will not operate at all.
All of the information for this sensor replacement video is applicable to the following brands:
Kitchenaid, Whirlpool
Tools used: multi-screwdriver
Step-By-Step Instructions1
Microwave Oven -Model KMBP100ESS01
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KitchenAid Built-In Microwave Oven Magnetron Sensor Replacement
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ATTENTION: TOOLS & ASSISTANCE NEEDED
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"Step 1: You will need a regular Phillips-head screwdriver, a T-10 Torx bit, a T-20 Torx bit, and an assistant to help move heavy microwave."
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"Step 2: Before you begin, be sure to turn off the power supply to your microwave."
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Step 3: Open the oven door and remove any racks from the oven along with the turntable and support.
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Step 4: Now use a Phillips-head screwdriver to unthread the two screws securing the mounting flanges to the cabinet.
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Step 5: Remove the washers as well if still intact.
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Step 6: Now have an assistant to help you pull the appliance out of the cabinet and set it on a sturdy surface.
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Step 7: Be aware that if the conduit cable is not long enough to move the microwave oven you will need to disconnect the power and grounding wires and remove the conduit cable from the junction box.
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Step 8: Use a Phillips-head screwdriver or a quarter-inch nut driver to unthread the four screws securing the top acces panel.
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Step 9: Lift the panel up then slide forward to remove.
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Step 10: Use a small flat-head screwdriver to depress the retianing tabs to help detatch the inverter board vent cover.
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Step 11: You'll need to unthread the screw to release the thin metal retainer to fuly remove the cover.
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Step 12: Unthread all of the screws securing the right side panel.
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"Step 13: With the panel removed, you can use a T-20 torx bit to unthread the four magnetron mounting screws. "
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"Step 14: To fully release the magnetron, you will need to detach the cavity vent assembly. First pull the front and side retaining tabs back to release the main control board and move it out of the way. "
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Step 15: Detach the retaining spring and lift out the light bulb.
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"Step 16: Next, unthread the screws securing the power supply board mounting plate. "
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Step 17: Move the plate and board out of the way.
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Step 18: Disconnect the communication wire from the user interface board.
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Step 19: Rotate the vent damper actuator clockwise to detach it from the vent assembly.
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Step 20: You can now unthread the screws securing the cavity vent assembly. Set the assembly aside.
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Step 21: Disconnect the wire connecter from the magnetron.
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"Step 22: Turn the magnetron over, note the location of the sensor, then use a T-10 torx bit to unthread the screw to release the sensor. "
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Step 23: Disconnect the sensor wire from the main control board to fully remove.
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Step 24: Install the new magnetron sensor by connecting the wire to the control board.
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Step 25: Secure the sensor to the magnetron with the screw.
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"Step 26: Before remounting the magnetron inspect the gasket for damage. If the gasket is frayed or burnt, you should replace the magnetron with a new one. "
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Step 27: Insert the magnetron antenna into the wave guide as you position the component on the mounting plate.
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Step 28: Thread and tighten the four mounting screws to secure.
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Step 29: Position the sensor wire in the notch under the vent cover base.
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Step 30: Reconnect the magnetron wire connector.
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Step 31: Reposition the cavity vent assembly.
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"Step 32: Thread the screws to secure. Make sure the switch wires are secured in the vent, assembly notch. "
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Step 33: Reinsert the vent damper actuator into the vent assembly and rotate counter-clockwise to lock it into place.
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Step 34: Reconnect the communication wire to the user interface board.
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Step 35: Realign the power supply board mounting plate and secure it with the screws.
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Step 36: Reinsert the light bulb into the hole and secure it with the retaining spring.
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Step 37: Replace the main control board by first positioning the rear edge under the tabs then secure the board under the front and side tabs.
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Step 38: Realign the side panel and replace the screws.
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Step 39: Reposition the vent cover and snap it into position.
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Step 40: Insert the retainer through the rear panel and thread the screw to hold it in place.
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Step 41: Replace the top access panel by inserting the rear edge first. Secure it with the screws.
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"Step 42: With an assistant, return the microwave oven to the cabinet and push it into position. "
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Step 43: Insert the washers into the holes in the flanges then thread the two screws to secure the flanges to the cabinet.
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Step 44: Replace the support and align the turntable on the coupling.
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Step 45: Turn on the power supply back on to the microwave.
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Congrats! Your microwave oven is ready for use.