Parts for Kenmore 721.80043700 (72180043700, 721 80043700): Interior Parts I Parts

A Tap-Tite binding-head screw used to fasten appliance panels and components where a self-tapping metal thread is required. Replaces missing or damaged fasteners to restore secure assembly and reduce vibration or rattling. What it does:

• Creates its own mating thread in thin sheet metal for a secure hold without a nut.
• Holds panels, brackets, and trim in place to prevent looseness or movement.
• Commonly used where stripped, missing, or broken screws cause rattling, misalignment, or parts that won't stay attached.
• Compatible with standard screwdrivers or nut drivers sized to the binding-head.

• Disconnect power and unplug the appliance before working on it.
• Use the correct driver bit to avoid cam-out or head damage.
• Start straight and apply steady pressure; avoid overtightening to prevent stripping the formed threads.
• If the original hole is badly damaged, assess for repair or use of a larger fastener as needed.

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 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

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.

This turntable shaft (MH-8) connects the microwave's turntable motor to the glass tray hub so the tray spins for even heating. Replace it when the tray won't rotate, slips intermittently, or makes grinding/clicking noises.

• Couples the turntable motor to the tray hub to drive rotation
• Helps ensure even cooking and defrosting by keeping the tray moving
• Typical symptoms: tray not turning, intermittent/jerky rotation, grinding or clicking from the cavity floor
• Damage indicators: cracks, melted/rounded drive surfaces, or excessive wobble

• Disconnect power to the microwave at the plug or breaker before servicing
• Remove the glass tray and roller ring to access the shaft
• Lift the old shaft straight up; if stuck, access the turntable motor from below to push it out
• Align and press the new shaft fully onto the motor spindle; reassemble and test rotation

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.

A high-voltage capacitor for the appliance's high-voltage circuit that stores and releases electrical energy to support proper heating operation. Replacing a failing capacitor can restore consistent heating and prevent related electrical faults. What it does:

• Stores and delivers high-voltage energy used by the magnetron/ high-voltage assembly to generate heat.
• Failure may cause no-heat or weak-heat conditions in the oven.
• Faulty capacitors can contribute to arcing, loud humming, or blown high-voltage fuses.
• Works as part of the HV circuit; not a user-serviceable low-voltage control.

• High-voltage components can hold a dangerous charge—disconnect power and discharge the capacitor before servicing.
• Use insulated tools and avoid touching terminals; verify proper operation with appropriate test equipment.

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.

This mounting plate is a metal bracket used to secure the microwave chassis/components in the correct position. A worn or damaged plate can cause poor fitment, vibration, or noise during operation.

• Provides a stable mounting surface for the designated microwave assembly
• Helps reduce vibration and rattling noises
• Restores proper alignment if the original plate is bent or broken
• Commonly replaced when the original plate is damaged or missing

• Unplug the appliance and discharge the high-voltage capacitor before servicing a microwave
• Use proper personal protective equipment; metal edges can be sharp
• Note orientation and fastener locations before removal
• Tighten mounting hardware evenly to avoid distortion