721-85032111 Parts

This microwave thermostat is the safety control that monitors temperature and opens the circuit if overheating is detected, protecting internal components. Replace it if your oven is dead, loses heat, or shuts off mid-cycle due to a failed thermostat. What it does:

• Monitors temperature and interrupts power when overheating occurs to help prevent damage
• Helps protect internal components and wiring from excessive heat
• Failure can cause: no power, shuts off during or shortly after starting, or runs but does not heat
• Replacing a failed thermostat helps restore normal operation and safety protections

• 1 thermostat

• Unplug the appliance; microwaves contain high-voltage components that can retain a lethal charge even when unplugged
• Remove the outer cover to access the thermostat; location varies by model
• Move wires one at a time to the new thermostat and mount it firmly against the mating surface for proper heat sensing
• Reassemble, restore power, and test operation

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 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

The Interlock Door Switch is an OEM part for LG microwaves. It is a safety component located on the door of the microwave designed to prevent the microwave from operating unless the door is securely closed. The interlock door switch works with the microwave's electronic control board to sense when the door is open or closed and allow or disallow operation accordingly.

Causes of a bad interlock door switch can include normal wear and tear from repeated opening and closing of the microwave door over time.

Symptoms of a bad interlock door switch include:

• The microwave runs or heats with the door open
• Error codes or diagnostic messages related to door sensors on the control board
• The microwave fails to operate even when the door is securely closed

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

Inner plastic door film covers the holes in the inner door frame.

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.

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 door frame assembly replaces the appliance's outer door trim and support to restore proper door fit and protect the inner door components. Ideal when the door frame is cracked, bent, or no longer secures the door evenly. What it does:

• Restores the outer door trim and structural support so the door closes and latches properly.
• Protects the door glass and inner components from impact and moisture intrusion.
• Helps eliminate gaps or misalignment that can cause rattling, air leaks, or difficulty closing the door.
• Matches the OEM form for a direct replacement when the original frame is damaged.

• Disconnect power and unplug the appliance before starting any repair.
• Remove the existing door trim/frame by loosening the retaining screws or clips; handle any glass carefully.
• Check door alignment and seal after installation; adjust hinge or strike as needed for proper fit.
• If the assembly has bonded or sealed components, consider replacing any associated gasket or fasteners if damaged.

This is a motor start/run capacitor that helps the appliance's motor start and run smoothly by supplying a brief boost of electrical energy. Replacing a failing capacitor restores reliable motor startup and operation. What it does:

• Provides the brief electrical surge needed to start and keep the motor running
• Commonly linked to motors that hum, fail to start, or run intermittently
• Helps prevent overheating from repeated start attempts when functioning properly
• Works with the appliance's start circuitry to ensure consistent performance

• Disconnect power to the appliance before accessing electrical components
• Discharge the capacitor and use insulated tools
• Observe polarity/terminal layout and secure connections to factory specifications
• Dispose of the old capacitor according to local electronic-waste regulations

Size: 5 inches x 7 3/4 inches.

This mechanical charcoal refrigerator filter helps reduce food and fridge odors for fresher-smelling compartments. It's a direct-fit replacement that restores odor-absorbing capability so your fridge interior smells cleaner. What it does

• Adsorbs and traps common food and household odors to reduce smells in the fridge
• Helps prevent odor transfer between compartments and stored foods
• Restores the intended odor-control function when the original filter is spent or clogged
• Works as a simple replaceable cartridge in compatible LG refrigerator filter housings

• One mechanical charcoal refrigerator filter cartridge

• High-level replacement: remove the old filter cartridge and snap or twist the new cartridge into the filter housing per the refrigerator manual
• Follow the refrigerator manufacturer's instructions for alignment and secure seating to avoid leaks or loss of function
• Disconnect power or follow any appliance-specific safety steps recommended by the manufacturer before servicing
• Dispose of the used filter per local regulations for household waste

This replacement lamp assembly restores interior illumination so you can see the appliance cavity clearly and safely. It fits the original mounting and electrical connections for a direct swap. What it does

• Replaces a burned-out, flickering, or dim interior lamp so you can inspect food and parts easily
• Provides the correct shape and connector to match the appliance's original lamp location and mounting
• Helps eliminate intermittent lighting caused by a damaged lamp or failed lamp connection
• Restores normal light output for safe loading and unloading

• Disconnect power to the appliance before starting any repair
• Allow the appliance and old lamp to cool completely before handling
• Handle the lamp by its base or use gloves to avoid oil contamination on the bulb
• Follow the appliance's service manual or OEM diagram for correct removal and installation