Kenmore Microwave 721.67903601 (72167903601, 721 67903601) Parts

The Microwave Door Switch is an OEM replacement part for LG countertop microwaves. It monitors the door position electrically to prevent unsafe oven operation if ajar. 

Symptoms of a bad door switch include:

• Inability to start or pause a cooking cycle unless securely latched  
• Error messages about the door being open
• Inconsistent detection of open/closed door positions
• Unreliable contact functioning after extended use

Causes involve normal wear of electrical contacts and internals through many open/close uses. Exposure to moisture intrusion from spills may potentially damage sensitive switch circuitry over time as well.

This genuine LG replacement switch is also compatible with Sears/Kenmore microwaves.

The Magnetron is an OEM part for LG microwaves. It is responsible for generating the microwaves that cook or heat the food inside the appliance. The magnetron converts electrical energy into microwave radiation, ensuring efficient and even heating.

Causes of a bad magnetron can include prolonged use, electrical surges, or overheating. Over time, these factors can lead to the magnetron wearing out or failing completely.

Symptoms of a bad Magnetron include:

• The microwave not heating food
• Strange noises during operation
• Burning smell or smoke
• The microwave shutting off unexpectedly

This OEM LG part is also compatible with Sears/Kenmore models.

The Diode is an OEM replacement part for LG countertop microwave models. Located internally on circuit boards regulating magnetron function, it precisely controls the electric current flow.

Causes of a bad diode involve thermal fatigue over time putting repetitive stress on sensitive semiconductor junctions. Microwave demands may accelerate failures.

Symptoms include:

• Intermittent cooking or complete failure to energize the tube
• Error codes appearing on the control panel display
• Buzzing or humming noises emitting from internal circuitry

This OEM LG part is also compatible with Sears/Kenmore microwaves.

This canopy is a molded trim cover used on compatible microwaves. It finishes and protects the mounting area, helping shield components and restore a clean, secure appearance when the original cover is damaged or missing. What it does:

• Provides a finished look by covering exposed edges and fasteners on the microwave
• Helps protect underlying parts from grease, dust, and moisture
• Assists in keeping adjacent components aligned and secured
• Typical failure signs: cracks, broken/missing tabs, loose fit, rattling, or a missing cover

• 1 canopy

• Disconnect power to the microwave before servicing
• Note orientation; retain and transfer any screws or clips from the original part
• Handle plastic tabs carefully; do not overtighten screws to avoid cracking
• Support the assembly to prevent strain

This truss head tapping screw secures panels, brackets, and covers in your appliance. Replacing a missing or damaged fastener restores a snug fit, reduces vibration, and helps keep components properly aligned for reliable performance.

• Provides low-profile holding power; wide truss head helps secure thin panels and trim
• Replaces lost, stripped, or corroded screws at the original mounting points
• Helps eliminate rattling, vibration, or loose handles/covers
• Addresses situations where a screw will not tighten or backs out during use

• Disconnect power; shut off water/gas if applicable before servicing
• Align parts and hand-start threads to avoid cross-threading
• Tighten until snug; do not overtighten to prevent stripping
• If the receiving hole is damaged, for repair before installing the new screw

A direct-replacement circulating motor that moves air inside the refrigerator cabinet to help maintain even temperatures and consistent cooling. Replacing a worn motor restores airflow and can reduce warm spots and uneven cooling. What it does:

• Drives internal airflow to distribute cold air between compartments for more uniform temperatures.
• Restores circulation when a failed motor causes weak or no airflow.
• Common, safe-to-report symptoms: uneven cooling, warm spots in the fridge, the appliance running more than usual, or unusual humming/noise from the cabinet.
• Works with the appliance's wiring harness and mounting system to deliver continuous air movement while the cooling system runs.

• Always unplug the appliance before beginning service to avoid electric shock.
• Handle the motor and fan blades carefully to avoid bending or damage; keep fingers and tools clear of blades.
• Confirm correct connector orientation and secure mounting to prevent vibration or rubbing.
• After installing, power up briefly to verify the motor runs and the fan spins freely before reassembling panels.

A small replacement fastening nut used to secure components on LG appliances. Replacing a worn or missing nut restores a secure fit and helps eliminate looseness or rattling for reliable operation. What it does

• Fastens and secures mating parts or hardware on appliance assemblies
• Stops movement that can cause rattling, vibration, or misalignment
• Useful when a nut is stripped, lost during service, or damaged
• Helps maintain safe, stable operation of the repaired area

What's included One nut as shown Install notes

• Disconnect power and water before servicing the appliance
• Verify the nut matches the original by thread, size, and profile before installation
• Hand-thread first to avoid cross-threading, then tighten with the correct tool; avoid overtightening
• Keep small parts away from children and pets during repair

This is a truss-head tapping screw used to secure trim, panels, and small assemblies on compatible LG appliances. It provides a low-profile, wide-bearing head that helps hold parts flush and resist pull-through. What it does:

• Fastens plastic and sheet-metal components where a self-tapping thread is needed
• Truss head spreads load to prevent damage to soft or thin materials
• Helps secure control panels, brackets, or trim pieces that require a low-profile head
• Common replacement when original mounting screws are missing, stripped, or corroded

• One truss-head tapping screw

• Use the correct screwdriver bit and moderate torque to avoid stripping the screw or workpiece
• Start threading straight and let the screw form threads without forcing at an angle
• Disconnect power and follow appliance-specific service safety procedures before working internally
• Replace any damaged mating threads or clips for a secure fit

This Fan Blade is an OEM part for LG microwaves. It is a critical component designed to circulate air within the microwave, aiding in heat dissipation and ensuring even cooking. 

Fan blades in microwaves can suffer from wear, imbalance, or damage due to regular use or accumulation of debris. A malfunctioning fan blade can lead to inadequate ventilation, affecting the microwave's cooking efficiency and potentially causing overheating.

Symptoms of a bad fan blade include:

• Unusual noises during operation, such as rattling or buzzing, indicate a loose or damaged blade.
• The microwave overheating or shutting off prematurely.
• Inconsistent cooking or hot spots in food suggest poor air circulation.
• The fan not starting, or stopping unexpectedly during use.
• Visible signs of damage or wear on the blade.

This OEM LG part is also compatible with some Sears/Kenmore models.
 

Thermistor is a temperature-sensing replacement that monitors refrigerator and freezer temperatures so the control board can regulate cooling. Replacing a faulty thermistor restores accurate temperature readings and helps stabilize cooling performance. What it does:

• Senses interior/evaporator temperature and sends a signal to the control board for temperature regulation.
• Helps prevent erratic cooling, long run-times, or inconsistent compartment temperatures when operating correctly.
• Faulty thermistors can contribute to excessive frost, failed defrost cycles, or compressor cycling issues.
• Use when the existing sensor fails to report correct temperatures or the part number matches.

• Always disconnect power to the appliance before servicing to avoid shock or damage.
• The sensor is typically mounted on or near the evaporator or inside a cabinet wall; access may require removing panels or covers.
• Handle the sensor and wiring harness gently; avoid pulling on wires or bending the sensor element.

This is a replacement screw used to secure appliance components and panels. It restores proper fastening where a stripped, missing, or damaged screw causes loose parts or rattling. What it does:

• Fastens panels, trim, or internal components to maintain structural fit
• Helps stop vibration-related noise from loose assemblies
• Replaces missing or corroded screws that prevent proper closures
• Restores secure mounting after repairs or disassembly

• Use the correct screwdriver or bit to avoid stripping the head
• Tighten until snug—do not over-torque to prevent thread damage
• Keep small parts away from children and pets
• Disconnect power or water before accessing internal parts