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How to Replace the Thermal Fuse on a Kenmore Microwave

A thermal fuse helps protect your Kenmore microwave from damage caused by overheating. If the temperature of the microwave exceeds a certain level, the thermal fuse opens, cutting off the power supply to the microwave. Normally, the fuse resets when the microwave cools down. When the fuse is worn or damaged, it can remain open, rendering the microwave inoperable. A thermal fuse stuck in the open position needs to be replaced.

Things You'll Need

  • Phillips-head screwdriver
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Instructions

    • 1

      Unplug the microwave’s power cord from the wall outlet.

    • 2

      Remove the two Phillips-head screws from the top of the microwave.

    • 3

      Pull up and out on the grille to remove it from the microwave. Set the grille aside.

    • 4

      Open the door of the microwave. Remove the Phillips-head screw from the top edge of the control panel. Pull the top of the control panel forward, and disconnect the wiring harnesses from the back of the control panel. Set the control panel aside.

    • 5

      Remove the access panel located above the control panel opening. The access panel is made of metal and has vents cut into it. Pull the panel straight out to remove it and expose the high-voltage opening.

    • 6

      Unplug the two wires connected to the thermal fuse terminals. The thermal fuse is on the left side of the high-voltage opening, directly below the power cable.

    • 7

      Turn the thermal fuse one-quarter turn counterclockwise. Slide the fuse to the right to remove it from the mounting slot. (1, 3-8 (28))

    • 8

      Slide a replacement fuse into the mounting slot. Turn the fuse one-quarter turn clockwise to lock it in place. Connect the two wires to the fuse terminals.

    • 9

      Place the cover on the high-voltage opening. Slide the bottom of the control panel into the slot at the bottom of the control-panel opening. Press the control panel against the front of the opening and insert the retaining screw. Tighten the screw to hold the panel in place.

    • 10

      Slide the grille onto the top of the microwave. Align the mounting holes with the holes in the body of the microwave. Install and tighten the retaining screws.

    • 11

      Close the microwave door, and plug in the microwave.

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Microwave Ovens
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