Parts for Kenmore 721.85032111 (72185032111, 721 85032111): Interior Parts

The LG microwave glass tray is an OEM replacement part for LG countertop microwaves. Located inside the microwave cavity, the glass tray provides a flat, durable surface for cooking and heating food items. The tray measures about 13 inches in diameter.

Causes of a bad glass tray can include cracks or chips from impact damage, prolonged exposure to high heat levels, or chemical etching from acidic food spills.

Symptoms of a bad glass tray microwave include:

• Cracks, chips, or breaks in the glass compromising structural integrity
• Difficulty removing or placing the tray due to a poor sliding fit  
• Food particles or liquids seeping below the tray and needing cleaning
• Visibility issues looking inside the microwave cavity  

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

Color: brown. Measures about 10 inches in diameter.

The Microwave Turntable Motor is an OEM replacement part for LG over-the-range microwaves. This motor is responsible for powering the turntable inside the microwave cavity, ensuring even heating and cooking of food items.  

Symptoms of a bad motor include: 

• The turntable not spinning or turning intermittently
• Loud buzzing or grinding noises coming from the microwave interior
• The turntable spinning but not evenly or at the proper speed
• Smoke or burning smells coming from the microwave

Causes of a bad motor can include normal wear and tear over extended use, residue or debris buildup interfering with operation, or failure of internal motor components.

The Turntable Coupler is an OEM part for LG microwaves. This coupler connects the motor to the turntable, enabling the rotation of the glass tray during the cooking process. 

Causes of a bad turntable coupler can include wear and tear from regular use, cracks or breaks due to the weight of heavy dishes, or damage from accidental impact. 

Symptoms of a bad turntable coupler include:

• The glass tray not rotating during operation
• Uneven heating or cooking of food
• Unusual noises from the turntable area
• Visible damage or wear on the coupler

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

This canopy resistor regulates current to a range-hood or canopy fan circuit to help the blower run at the correct speeds. Replacing a failing resistor can restore proper fan speed control and stop intermittent operation. What it does:

• Controls electrical resistance in the canopy/blower circuit to help regulate fan speeds.
• Helps prevent the motor from running only on a single speed or from failing to start at selected speeds.
• Can cause symptoms such as inconsistent fan speeds, no response from speed controls, or occasional fan cutoff.
• Works with the hood's wiring and control switch to deliver the correct voltage to the fan motor.

• Disconnect power to the appliance before accessing the canopy or electrical connections.
• Inspect wiring and connectors for heat damage or corrosion; replace harness or terminals if damaged.

This high-voltage transformer steps household AC up to the level the magnetron needs to generate microwave energy. Replace a failing transformer to restore reliable heating when the unit runs but food remains cold.

• Steps up line voltage to the high voltage required by the magnetron
• Works with the high-voltage capacitor and diode to create microwave energy
• Failure can cause running but no heat, loud humming/buzzing, burning odor, or visible overheating
• Shorted windings can blow the internal fuse or trip a breaker

• Unplug the microwave; high-voltage components can retain a dangerous charge—properly discharge the HV capacitor.
• Remove the outer cabinet, label wire locations, and disconnect leads carefully. Transfer any mounting hardware/brackets and secure the transformer firmly.
• Verify all connections are tight and routed correctly; reassemble and test with a cup of water. Do not operate the microwave empty.

The Magnetron is an OEM part for LG microwaves. As the primary cooking mechanism, it generates microwave energy to heat and cook foods quickly.

Causes can be from normal wear and tear over years of use. Damage may also occur if the microwave interior is exposed to moisture, spills or debris.

Symptoms of a faulty magnetron include:

• Slow or ineffective cooking
• Hot or cold spots in cooked foods
• Buzzing or humming noises emanating from inside the microwave

This OEM LG part is also compatible with some 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.