It’s quite normal for your Whirlpool microwave to make a humming sound. However when it appears to be louder than normal, there could be something wrong with it. So, in this article, we are going to show you what to do if your Whirlpool microwave is making noise.
Table of Contents
Whirlpool Microwave is Making Noise and Not Heating
If your Whirlpool microwave is making a loud noise and not heating as well, it is most likely the cause of a faulty magnetron. Before replacing this component, you should call a technician to determine whether it is actually faulty.
Since the magnetron cost almost as much as a microwave, if your microwave is old, it would be best to replace the microwave itself. However, if you still want to replace the magnetron in your Whirlpool microwave, follow the steps listed below…
Step 1: Turn off and unplug the microwave.
Step 2: Have someone support the microwave as you take out the mounting bolts which secure it to the cabinet.
Step 3: Tilt the microwave forward and pass the power cord through the hole in the cabinet.
Step 4: Lift the microwave up and place on a flat and sturdy surface lined with a blanket.
Step 5: Take out the screws which hold the front grille in place.
Step 6: Pull the grille out.
Step 7: Take out the glass tray and support in the microwave.
Step 8: Lay the microwave on its back.
Step 9: Take out the screws which hold the bottom panel in place.
Step 10: Gently pull the bottom panel then disconnect the wire harness.
Step 11: Note where each wire goes on the turntable motor then disconnect them.
Step 12: Set the bottom panel aside.
Step 13: Turn the microwave back.
Step 14: Take out the screws at the back and top of the microwave which hold the cover in place.
Step 15: Take out the screws securing the blower cover then take out the cover.
Step 16: Remove the microwave cover.
Step 17: To avoid getting injured, discharge the capacitor. Do this by placing a screwdriver across the two terminals of the capacitor. Make sure that the screwdriver has an insulated handle.
Step 18: Take out the screw which holds the grounding wire in place.
Step 19: Take out the screws securing the air baffle.
Step 20: Pull the air baffle out.
Step 21: Note where each wire goes on the magnetron then disconnect them.
Step 22: Take out the screws to remove the magnetron’s thermal protector.
Step 23: Take out all the screws which secure the magnetron tube to the frame.
Step 24: Lift the magnetron out.
Step 25: Before installing the new magnetron, ensure that the seal is properly aligned at the bottom of the antenna.
Step 26: Align the magnetron and hold it down with the screws.
Step 27: Reconnect the wires to the appropriate terminals on the magnetron.
Step 28: Position the thermal protector on the magnetron and hold it in place with the two screws.
Step 30: Reposition the air baffle and secure it with the screws.
Step 31: Secure the grounding wire to the frame.
Step 32: Ensure that the power cord is secured.
Step 33: Position the microwave cover.
Step 34: Return the screws at the top and back of the microwave.
Step 35: Reposition the blower cover and hold it in place with the screws.
Step 36: Lay the microwave on its back.
Step 37: Return the bottom microwave panel and connect the wires to the right terminals of turntable motor.
Step 38: Align the other wire in the frame then connect the wire harness.
Step 39: Secure the bottom panel with the screws.
Step 40: Turn the microwave back.
Step 41: Push the front grille back and return the screws above it.
Step 42: Lift the microwave up and position on the bracket.
Step 43: Pass the power cord through the hole in the cabinet.
Step 44: Have someone support the microwave as you secure it to the cabinet with the bolts.
Step 45: Return the glass tray and support to the microwave.
Step 46: Plug the microwave back in.
Below is a video which will show you how to replace the magnetron in a Whirlpool microwave.
The Diode
Another reason your Whirlpool microwave is making noise may be the result of a faulty diode. To test and replace the diode in a Whirlpool microwave, do the following…
Step 1: Unplug the microwave from the outlet.
Step 2: Using a screwdriver, take out the screws which hold the front grille of the microwave in place.
Step 3: Open the microwave door.
Step 4: Remove the front grille of the microwave.
Step 5: Take out the screw above the control panel.
Step 6: Lift the control panel up to detach.
Step 7: Take out the two screws which hold the inner access panel in place.
Step 8: Before going any further, you will need to discharge the capacitor. To discharge the capacitor, place a screwdriver over the two terminals of the capacitor simultaneously.
Step 9: Take out the screw which holds the diode to the frame.
Step 10: Using a pair of pliers, detach the diode from the capacitor.
Step 11: Using a multimeter, test the diode for continuity. There should be continuity in one direction. If there isn’t get a new diode. Click here to know how to test a diode for continuity.
Step 12: Connect the diode to the capacitor and screw it to the frame.
Step 13: Realign the inner access panel and hold it down with the screws.
Step 14: Push the control panel back in and hold it in place with the screw.
Step 15: Reposition the front grille and secure it with the screw.
Step 16: Close the microwave door and plug it back in.
The video below will show you how to replace the diode in a Whirlpool microwave.
The Turntable Motor
Another reason your Whirlpool microwave is making noise may be because of a faulty turntable motor. To replace the turntable motor in a Whirlpool microwave, do the following…
Step 1: Unplug the microwave.
Step 2: Take out all the screws which hold the bottom panel of the microwave in place.
Step 3: Carefully lower the panel down.
Step 4: Note where each wire goes on the turntable motor then disconnect them.
Step 5: Take out the screws which secure the turntable motor to the microwave.
Step 6: Take the turntable motor out.
Step 7: Test the turntable motor for continuity using a multimeter. If there is no continuity, get a new turntable motor.
Step 8: Install the new turntable motor and hold it in place with the screws.
Step 9: Connect the wires to the right terminals.
Step 10: Realign the bottom panel and hold it in place with the screws.
Step 11: Plug the microwave back in.
Watch the video below if you would like a visual on how to replace the turntable motor in a Whirlpool microwave.
Why Is My Whirlpool Microwave Turntable Making Noise?
If the turntable in your Whirlpool microwave is making noise, there could be many reasons for this. To know what the issue may be and how to fix it, read this article.
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