Kenmore Microwave 721.66462500 (72166462500, 721 66462500) 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 Time Delay Fuse is an OEM part for LG microwaves. This fuse provides a safety mechanism by delaying the flow of electricity, protecting the microwave's electrical components from power surges and ensuring the appliance operates safely. It helps to prevent immediate damage in the event of a power surge or electrical fault, thus prolonging the lifespan of the microwave.

Over time, the time delay fuse can become damaged due to electrical surges, wear and tear, or faulty connections. If the fuse blows, it can disrupt the microwave’s ability to function correctly.

Symptoms of a bad time delay fuse include:

• The microwave not turning on
• No response from the microwave control panel
• The microwave stopping unexpectedly during operation
• Electrical issues or blown circuits in the microwave

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

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 Door Latch Spring is a genuine OEM part for LG microwaves. As a key component of the microwave, the door latch spring is responsible for providing the tension needed to securely close and latch the microwave door. It works behind the scenes to ensure a tight seal when the door is shut.

Symptoms of a bad door latch spring include:

• The microwave door not closing or latching properly 
• Gaps appearing around the door seal when shut
• Difficulty opening and closing the door

Causes of a bad door latch spring can include wear and tear over time. Exposure to excessive door slamming can also place undue stress on the spring.

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

The Turntable Support is an OEM replacement part for LG microwaves. It fits under the cooking tray and is used to support the tray and to engage the rotating coupler. If your cooking tray will not turn or rumbles when it turns, check the support assembly for signs of wear or damage. If no damage can be seen, check the coupler for damage.

Causes of a bad turntable support include normal wear over extended use. Improper cleaning methods could potentially damage delicate support components.

Symptoms of a bad turntable support include:

• Wobbly or unstable turntable rotation
• Squeaking or grinding noises coming from below the turntable
• The inability of the turntable to rotate dishes consistently

This OEM LG part is also compatible with some 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 is the glass turntable tray that sits inside your microwave. It provides a stable, heat-resistant surface and rotates with the drive to help cook food evenly. Replace cracked or missing trays to restore safe, consistent heating.

• Supports dishes and rotates with the drive coupler to distribute heat more evenly
• Provides a flat, microwave-safe surface for plates and bowls
• Replacing a damaged tray can address wobbling, poor rotation, or uneven cooking
• Helps contain spills and makes cleanup easier

• Disconnect power before servicing
• Ensure the roller ring is properly seated; align the tray's center with the drive coupler and set it flat
• Turn the tray by hand to verify smooth rotation, then test with a microwave-safe cup of water

This synchronous turntable motor rotates the glass tray inside your microwave to help food heat evenly. Replace it to restore smooth, consistent rotation if the tray has stopped turning, stalls intermittently, or makes unusual noises from the base.

• Drives the turntable via the center coupler to rotate the glass tray at a steady speed
• Promotes even exposure to microwave energy for more uniform heating
• Typical failure symptoms: tray won't turn, rotates only intermittently, or emits grinding/buzzing sounds from underneath
• If power reaches the motor but it doesn't run, the internal windings or gear set may be seized

• Disconnect power to the microwave before servicing
• If mounted over a range, remove the unit from the cabinet with assistance
• Access is typically from the bottom panel; note wire positions and shaft orientation before removal
• After installation, briefly test rotation before full reassembly; inspect the coupler and support for wear

This door latch assembly for a microwave engages the door hooks and actuates the interlock switches so the unit recognizes a closed door, restoring proper latching and helping ensure the oven only operates when securely shut.

• Engages the door hooks to trigger the interlock switches and signal "door closed"
• Can help resolve no-start or "Door/Open-Close" indications with the door shut
• Addresses a door that won't latch, feels loose, or shows cracked/worn latch parts
• Built to mount in the original location and interface with existing door switches

• Disconnect power before service; microwaves contain high-voltage components that can retain a dangerous charge
• Access typically requires removing the control panel to reach the latch/interlock bracket
• Note switch orientation and spring positions; transfer any reusable hardware from the old assembly
• After installation, verify firm door engagement and proper interlock switch actuation before restoring power

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

A circular lug designed to join a stripped wire to a threaded terminal for a secure electrical connection. Helps restore reliable contact at terminals and reduces the chance of intermittent power or arcing at connection points. What it does:

• Provides a strong mechanical and electrical connection between a wire and a screw or bolt terminal.
• Helps prevent loose connections that can cause intermittent operation, sparking, or overheating.
• Commonly used where a ring-style termination is required for safe, stable wiring.
• Works with properly sized wire and fasteners to maintain consistent conductivity.

• Always disconnect power to the appliance before inspecting or replacing electrical parts.
• Use the correct lug size and gauge for the wire and terminal; crimp or solder per manufacturer recommendations.
• Tighten terminal hardware to the appliance manufacturer's specified torque; avoid over-tightening which can damage the lug or terminal.
• If wiring insulation or the terminal is damaged or corroded, replace the affected components rather than reusing them.