Panasonic Microwave Is Not Heating [Solution]

Has your microwave stopped heating and you don’t know how to fix it? If this is the case, keep reading because in this article we are going to show you what to do if your Panasonic microwave is not heating.

Panasonic Microwave is Not Heating

If your Panasonic microwave is not heating, there is more than one possible reason for it. We will list them below and how to fix them.

The Diode

To replace the diode in a Panasonic microwave, do the following…

Step 1: Turn off and unplug the microwave.

Step 2: Take out the screws securing the cover of the microwave. There should be one at the right side and four at the back.

Step 3: Once you have taken out the screws, remove the microwave cover and set it aside.

Step 4: You will see the diode at the right side of the microwave close to the back. Before removing it, you will need to discharge the capacitor to avoid the risk of injury. Place a pair of pliers on the terminals of the capacitor simultaneously. If the capacitor is discharged you will hear a small pop.

Step 5: Take out the screw which holds the diode to the frame.

Step 6: Disconnect the diode from the capacitor.

Step 7: Test the diode using a multimeter. If there is no continuity, replace it. Click here to know how to test a microwave diode.

Step 8: Get a new diode and connect it to the capacitor.

Step 9: Screw the diode to the frame.

Step 10: Reposition the microwave cover on the microwave and secure it using the screws.

Step 11: Plug the microwave in.

If your Panasonic microwave is not heating still, keep reading.

The Door Switch

Another reason your microwave is not heating may be because of a faulty door switch. Read this article to know how to replace the door switch in a Panasonic microwave.

The Thermal Fuse

To replace the thermal fuse in a Panasonic microwave, do the following…

Step 1: Turn off the microwave and unplug it from the outlet.

Step 2: Take out the screws at the back and right side of the microwave which hold its cover in place. There should be four screws at the back and one at the right side.

Step 3: Remove the microwave cover.

Step 4: At the top of the microwave, you will see the thermal fuse. Disconnect the wire connectors from it.

Step 5: Take out the screw or screws which secure the thermal fuse to the microwave.

Step 6: Test the thermal fuse using a multimeter. Replace the thermal fuse if there is no continuity. Click here to find out how to test a thermal fuse for continuity.

Step 7: Screw the thermal fuse to the microwave.

Step 8: Connect the wires to the thermal fuse.

Step 9: Position the microwave cover and secure it with the screws.

Step 10: Plug the microwave back in.

The Capacitor

A faulty capacitor is another possible reason why your Panasonic microwave is not heating. To replace the capacitor in a Panasonic microwave, follow these steps…

Step 1: First of all, unplug the microwave.

Step 2: Take out the screws at the back and sides of the microwave which are holding its cover in place.

Step 3: Lift the microwave cover off and set it aside.

Step 4: Next, discharge the capacitor. Do this by placing a screwdriver with an insulated handle across the terminals simultaneously till you hear a pop.

Step 5: Disconnect the diode from the capacitor using a pair of pliers.

Step 6: Note where the wires go on the capacitor then disconnect them as well.

Step 7: Take out the screws which hold the capacitor to the microwave.

Step 8: Test the capacitor for continuity using a multimeter. If there is no continuity, the capacitor is faulty.

Step 9: Get a new capacitor and transfer the metal mounting bracket from the old one to the new one.

Step 10: Screw the capacitor into place.

Step 11: Reconnect the wires to the capacitor.

Step 12: Also connect the diode to the capacitor.

Step 13: Position the microwave cover back and hold it in place with the screws.

Step 14: Plug the microwave back in.

If your Panasonic microwave is not heating still, keep reading.

The video below will show you how to replace the capacitor in a microwave.

Panasonic - 2459403 A60903650AP High-Voltage Capacitor for NE-1257CR, NE-1257R, and NE-1258R Microwave Ovens

The Magnetron

Even though its very rare, a faulty magnetron may be why your Panasonic microwave is not heating. To replace the magnetron in a Panasonic microwave, follow these steps…

Step 1: Turn off the microwave and unplug it from the outlet.

Step 2: Take out the screws which hold the microwave cover in place. There will be screws at the back and sides.

Step 3: Lift the microwave cover off.

Step 4: Close to the top of the microwave, you will see the magnetron. Disconnect the wire plug connected to it.

Step 5: Take out the screws which hold the magnetron in place.

Step 6: Test the magnetron using a multimeter. If there is no continuity, the magnetron is faulty.

Step 7: Get a new magnetron.

Step 8: Position the magnetron and hold it in place with the screws.

Step 9: Reconnect the wire plug to the magnetron.

Step 10: Position the microwave cover and hold it in place with the screws.

Step 11: Plug the microwave back in.

Panasonic 2M261-M32JY Magnetron

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