How to Install Microwave Magnetron 6324W1A001L in a Kenmore Microwave

Quick answer: Unplug the microwave, remove the outer cabinet and discharge the high-voltage capacitor. Pull the two filament wires off the old magnetron, remove its screws and lift it off the waveguide. Seat 6324W1A001L with its antenna in the waveguide and gasket flat, bolt it down, reconnect and test.

The magnetron 6324W1A001L is the vacuum tube that generates the microwave energy in your Kenmore microwave. It bolts to the waveguide beside the cooking cavity and is fed by the high-voltage transformer and capacitor. When it fails, the microwave runs, the light and turntable work, but food stays cold, or you hear a loud hum and smell burning. This magnetron is listed for over-the-range models such as 72163654300 and the LG-built LMVM2033BD00 and LMHM2237ST00, and it replaces codes including 0CZZW1H004C, 5900W1A007C, 6851W1A002E and 6930W1A003J.

This is an advanced repair. The high-voltage capacitor inside a microwave can hold a lethal charge even after the unit is unplugged, so the manufacturer recommends a service technician for this part. If you proceed, discharge the capacitor properly before touching anything, and reassemble the magnetron with its gasket and shielding exactly as found so no microwave energy leaks. The guide below describes the technician's procedure step by step.

See part details and every compatible model: 6324W1A001L

⚠️ Safety First
  • Unplug the microwave and wait several minutes, then discharge the high-voltage capacitor by bridging its terminals to the chassis with an insulated tool before touching any component.
  • The magnetron contains ceramic insulators that may contain beryllium oxide; never break, sand or crush them, and dispose of the old tube intact.
  • Do not run the microwave with the cabinet off or with the waveguide gasket missing; microwave leakage is invisible and dangerous.
  • The magnetron magnets are strong; keep them away from pacemakers, credit cards and phones.

Tools and Parts You Need

  • Phillips and Torx screwdrivers for the cabinet and magnetron mounting screws
  • Insulated screwdriver with a jumper lead and alligator clips to discharge the capacitor
  • Needle-nose pliers to remove push-on filament terminals
  • Multimeter for testing the old magnetron and checking the discharge
  • Nut driver or socket set for the mounting bolts
  • Work gloves and safety glasses

Step-by-Step Installation

  1. Unplug and take the unit down Unplug the microwave. On an over-the-range model, have a helper support the unit while you remove the bolts through the upper cabinet, then tilt it forward off the mounting plate and set it on a padded bench with the back accessible.
  2. Remove the outer cabinet Take out the screws along the back and sides of the wrapper, slide the cabinet rearward and lift it off. Note the grille and any screws hidden under trim.
  3. Discharge the capacitor Locate the large cylindrical capacitor near the transformer. With an insulated screwdriver connected by a jumper lead to the chassis, touch each capacitor terminal for several seconds, then bridge the two terminals together. Confirm with a meter that no voltage remains.
  4. Photograph and disconnect the magnetron Photograph the two filament wires on the magnetron terminals, then pull each push-on connector straight off with pliers. Note any ground strap or thermal cutout mounted on the magnetron body.
  5. Unbolt and remove the old tube Remove the mounting screws that hold the magnetron flange to the waveguide, usually four. Lift the magnetron straight out so the antenna clears the waveguide opening. Keep the old gasket if the new part does not include one.
  6. Seat the new magnetron Fit the gasket flat on the flange of 6324W1A001L, then lower the antenna into the waveguide opening. The flange must sit square on the waveguide with no gap; tighten the screws evenly in a cross pattern so the seal is even.
  7. Reconnect and refit the thermal cutout Push the filament connectors back onto the magnetron terminals following your photo. Re-attach any thermal cutout or ground strap to the magnetron body in its original position.
  8. Reassemble and test Refit the cabinet with every screw, rehang the microwave and plug it in. Heat a cup of water for one minute; it should be steaming hot with no unusual hum or smell.

Fit Checks Before You Call the Job Done

  • Capacitor was discharged and confirmed at zero before any component was touched
  • Magnetron flange sits flush on the waveguide with the gasket in place and all screws tight
  • Both filament connectors are fully seated on the terminals
  • Thermal cutout and ground strap are reattached to the magnetron body
  • Every cabinet screw is back in so the shielding is complete
  • A cup of water heats normally with no arcing or burning smell

Common Mistakes to Avoid

Skipping the capacitor discharge This is the mistake that injures people. The capacitor can stay charged for a long time after unplugging. Discharge it every time, even if you think it has bled down.

Losing or crushing the waveguide gasket The gasket seals microwave energy inside. Fit it flat and undamaged, or leakage around the flange is possible.

Tightening the flange screws unevenly Cranking one screw fully before the others tilts the flange and leaves a gap. Snug all screws, then tighten in a cross pattern.

Forgetting the thermal cutout The cutout on the magnetron body protects it from overheating. Leave it off and the new tube can fail within weeks.

Troubleshooting After Installation

Microwave still does not heat after the new magnetron Unplug, discharge and check the high-voltage diode, capacitor and transformer connections. A failed diode is a common companion fault.

Loud buzzing when heating starts A filament connector is loose or the diode has shorted. Unplug, discharge and reseat the connectors, then test the diode.

Burning smell on first use Stop immediately. Unplug, discharge and check that no wire is touching the magnetron cooling fins and that the waveguide cover inside the cavity is clean and undamaged.

Microwave trips the breaker The magnetron may be shorted to the chassis or the capacitor wiring reversed. Unplug, discharge and compare every connection against your photo.

Care Tips After the Repair

  • Keep the waveguide cover inside the cavity clean; grease on it arcs and can burn out the magnetron.
  • Never run the microwave empty; with nothing to absorb the energy, the magnetron overheats.
  • Clean the grille and cooling vents so airflow across the magnetron fins is not blocked.
  • Use only microwave-safe containers to avoid arcing that stresses the tube.

Compatible Models (Sample)

This part is listed for 321 Kenmore models in our fitment data. Always confirm your exact model number on the appliance's rating plate.

Replaces or is replaced by: 0CZZW1H004C, 5900W1A007C, 6851W1A002E, 6930W1A003J, 6930W1A007H, EAF36358316

Repair Difficulty and Time

Difficulty: Advanced. Typical time: 60 to 90 minutes.

Frequently Asked Questions

Which microwaves use magnetron 6324W1A001L?

It is listed for Kenmore and LG-built over-the-range models such as 72163654300, 72185062010, LMVM2033BD00, LMHM2237ST00 and LMHM2017ST00. It replaces 0CZZW1H004C, 5900W1A007C, 6851W1A002E, 6930W1A003J, 6930W1A007H and EAF36358316.

Can I really do this myself?

The manufacturer recommends a service technician because of the capacitor hazard. If you are not completely confident discharging a high-voltage capacitor, have a technician fit the part.

How do I know the magnetron is the fault?

Typical signs are no heat with everything else working, a loud hum, or a burning smell. A resistance test of the old tube confirms it: filament terminals should read near zero, and either terminal to the case should read open.

Do I need a new gasket?

If the new part includes a gasket, use it. If not, reuse the old gasket only if it is flat and undamaged; a torn gasket must be replaced.

Final Checklist

  • Microwave unplugged and removed from the wall mount
  • Outer cabinet removed
  • Capacitor discharged and confirmed at zero
  • Filament wires photographed and disconnected
  • Old magnetron unbolted and removed intact
  • 6324W1A001L seated with gasket flat, screws tightened evenly
  • Filament connectors, thermal cutout and ground strap reconnected

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