Parts for Kenmore 721.87587610 (72187587610, 721 87587610): Interior Parts

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 is the glass turntable tray for the microwave cavity. It provides a stable, heat-resistant surface that rotates food for more even heating and reheating.

• Sits on the turntable support/roller and engages the center drive
• Helps promote even cooking by rotating food through the microwave energy
• Common failure signs: cracked or missing tray, wobbling during rotation, scraping noises, or uneven heating
• Replaces a damaged tray to restore safe, stable operation

• Unplug the appliance before servicing; allow interior to cool
• Remove the old tray, clean the support/roller, and seat the new tray on the center hub
• Ensure the tray sits flat and rotates freely before use
• Handle glass carefully to avoid chips or cracks

This microwave turntable assembly supports and rotates the glass tray so food heats more evenly. Replacing a damaged turntable restores smooth, stable rotation and reliable heating performance.

• Supports dishes on the glass tray and rotates them during cooking
• Engages the drive coupler to help promote more uniform heating
• Replaces a cracked, chipped, or missing turntable assembly
• Can help address wobbling, scraping noises, or failure to turn when the tray/support are damaged

• Disconnect power to the microwave before servicing
• Remove the old tray; clean the turntable track of debris
• If your model uses a roller ring, place it on the track, then seat the tray on the center coupler; ensure it sits flat and spins freely
• Do not operate the microwave without the turntable properly installed; inspect the drive coupler and turntable motor

The Turntable Motor is an OEM replacement part for LG microwaves. Located under the microwave cavity, it rotates the special turntable platter during cooking operations.   

Symptoms of a faulty turntable motor include:

• Turntable failing to spin or rotating unevenly during cooking  
• Abnormal noises or vibrations coming from the bottom of the unit
• Uneven cooking results along microwave perimeter 

Causes related to normal wear of internal motor workings through extended use. Damage from power surges is also possible over time.

This LG replacement part is compatible with some Kenmore models as well.

This turntable coupler connects the microwave's turntable motor to the glass tray, rotating it for even, consistent heating. Replace a worn or cracked hub to restore smooth tray motion and reduce noise during cooking.

• Couples the turntable motor to the glass tray for even heating
• Replaces a worn, cracked, or stripped hub that prevents rotation
• Helps reduce tray wobble and scraping sounds from the center
• Common symptoms: tray not turning, intermittent rotation, clicking/grinding at the hub

• Disconnect power before servicing; microwaves contain high-voltage components
• Remove the glass tray and roller ring; lift the old coupler straight up from the motor shaft (some models may require access from below per instructions)
• Align the new coupler with the keyed motor shaft and press it fully into place
• Reinstall the roller ring and tray; verify smooth, centered rotation

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 Thermostat is an OEM part for LG microwaves. This part monitors and regulates the temperature within the appliance. The thermostat ensures that the microwave does not overheat, automatically shutting off the power if the internal temperature exceeds safe levels. This preventive measure helps to avoid damage to the microwave and potential safety hazards in the kitchen. 

Causes of a bad thermostat can range from normal wear and tear, which may cause the component to lose its calibration over time, to overheating incidents that permanently damage its sensitivity.

Symptoms of a bad Microwave Thermostat include:

• The microwave unexpectedly turning off during use
• The microwave failing to start
• Inconsistent cooking temperatures or unevenly cooked food

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

The Diode Assembly is an OEM replacement part for LG microwaves. As an electrical part, it plays a key role in regulating power distribution throughout the microwave. 

Symptoms of a bad diode assembly can include:

• Lights or displays failing to illuminate  
• Inability to power the microwave or select cooking functions
• Intermittent or unexpected shutting off during use
• Sparking, burning smells or tripped circuit breakers

Causes may arise from repetitively fluctuating power loads degrading individual diodes over time. Moisture intrusion into electrical pathways can also cause issues.

This genuine LG OEM assembly is also compatible with some Kenmore microwave models as well. 

This replacement fuse assembly protects the appliance's power circuit by opening when an overcurrent or short occurs. Installing a new fuse assembly after a failure helps restore power and safeguard sensitive wiring and electronics. What it does:

• Interrupts electrical flow if current exceeds a safe threshold
• Helps protect wiring, control boards, and other components from damage
• Common symptoms: appliance completely dead/no lights, won't start or respond to controls, fuse tests open or repeatedly blows

• 1 fuse assembly

• Disconnect power at the breaker before servicing; verify zero voltage before touching wiring
• Match the exact part number and electrical rating specified for your model—do not upsize a fuse
• Identify and correct the underlying cause of the blown fuse (shorted component, pinched wire) before restoring power
• Some appliances contain capacitors that can hold a charge; follow the service manual to discharge if applicable

This bottom plate is the interior panel that covers and protects the oven or microwave floor, giving a clean cooking surface and shielding internal components from spills and debris. It helps maintain safe, reliable operation. What it does:

• Covers the appliance interior floor to catch drips and crumbs and keep them away from heating and mechanical parts
• Protects underlying components from corrosion and food damage
• Helps maintain even heat distribution by providing a stable cooking surface
• Worn, bent or missing plates can cause excessive debris buildup, odors, or contact with moving parts

• Disconnect power (unplug or switch off breaker) and allow the appliance to cool before starting
• Handle carefully—edges may be sharp; wear gloves if needed
• Install with existing factory screws or clips; do not force or bend the plate
• If other parts are damaged or missing, replace them per the manufacturer's instructions

The Magnetron Thermostat is an OEM part for LG microwaves and built-in ranges. Its primary function is to monitor the temperature and ensure that it remains within a safe operating range. If the temperature exceeds the preset limit, the thermostat will interrupt the power supply to the magnetron, preventing overheating and potential damage.

Causes of a faulty magnetron thermostat can include electrical malfunctions, component failures, or physical damage. These factors can result in issues such as erratic heating, microwave not heating properly, or the appliance shutting off unexpectedly.

Symptoms of a bad magnetron thermostat may include:

• Microwave not heating food evenly or at all
• Inconsistent or weak heating performance
• Microwave shutting off or displaying error codes related to temperature issues

This OEM LG part can also be used on Kenmore/Sears appliances.