721-67903 Parts

Microwave won't heat but runs normally? A failed magnetron is the likely cause. This part generates the microwaves that cook food. Moderate DIY repair.

Replaces a cracked, chipped, or broken glass turntable tray inside your microwave cavity. Typically damaged during cleaning or accidental impacts.

Microwave won't heat or makes loud buzzing noise? The diode regulates magnetron current flow. Simple repair—test with multimeter for continuity.

Molded trim canopy cover for microwaves. Finishes and protects the mounting area by covering exposed edges. Replaces damaged, cracked, or missing covers.

Replace your burned-out microwave light bulb to restore clear visibility inside the cavity or over the cooktop. Confirm fit with your model number.

Truss head tapping screw secures panels, brackets, and covers in appliances. Replaces missing or damaged fasteners to restore snug fit and alignment.

Microwave won't heat? A failing high-voltage capacitor disrupts the heating circuit. This part stores electrical energy for consistent operation.

Thermistor is a temperature-sensing replacement that monitors refrigerator and freezer temperatures so the control board can regulate cooling. Replacing a faulty thermistor restores accurate temperature readings and helps stabilize cooling performance. What it does:

• Senses interior/evaporator temperature and sends a signal to the control board for temperature regulation.
• Helps prevent erratic cooling, long run-times, or inconsistent compartment temperatures when operating correctly.
• Faulty thermistors can contribute to excessive frost, failed defrost cycles, or compressor cycling issues.
• Use when the existing sensor fails to report correct temperatures or the part number matches.

• Always disconnect power to the appliance before servicing to avoid shock or damage.
• The sensor is typically mounted on or near the evaporator or inside a cabinet wall; access may require removing panels or covers.
• Handle the sensor and wiring harness gently; avoid pulling on wires or bending the sensor element.

Small fastening nut that secures components inside microwaves and ranges. Replace if worn, missing, or stripped to restore proper assembly fit.

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 holder secures the door lock assembly to the washer, keeping the latch and lock mechanism aligned for reliable door closure and operation. Replaces a worn or broken lock mounting bracket to restore proper door engagement. What it does:

• Mounts and supports the washer door lock assembly to keep the latch aligned
• Holds the lock in place so the door can fully close and lock during cycles
• Common symptoms: door won't latch, door comes loose, washer won't start, or door/lock error codes
• Prevents excessive movement that can damage the lock or striker

• Unplug the appliance and turn off water supply before beginning work
• Basic hand tools (screwdriver, nut driver) are typically required; keep fasteners for reassembly
• Handle edges and the door/lock assembly carefully to avoid damage

Microwave overheating or shutting off unexpectedly? This thermostat regulates temperature to prevent damage. A straightforward fix for most DIYers.

This Fan Blade is an OEM part for LG microwaves. It is a critical component designed to circulate air within the microwave, aiding in heat dissipation and ensuring even cooking. 

Fan blades in microwaves can suffer from wear, imbalance, or damage due to regular use or accumulation of debris. A malfunctioning fan blade can lead to inadequate ventilation, affecting the microwave's cooking efficiency and potentially causing overheating.

Symptoms of a bad fan blade include:

• Unusual noises during operation, such as rattling or buzzing, indicate a loose or damaged blade.
• The microwave overheating or shutting off prematurely.
• Inconsistent cooking or hot spots in food suggest poor air circulation.
• The fan not starting, or stopping unexpectedly during use.
• Visible signs of damage or wear on the blade.

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

A flat washer used with the appliance's fastening hardware to distribute load and reduce wear. Helps maintain secure connections and prevents damage to mating surfaces for reliable operation. What it does:

• Provides an even bearing surface for bolts or screws to prevent pull-through
• Reduces friction and wear between fasteners and housing parts
• Helps keep fasteners tight and resists loosening from vibration
• Commonly used where a smooth, protective spacer is needed

• Verify correct location and orientation before reassembly
• Use manufacturer-recommended fasteners and torque specifications
• Power off and unplug the appliance before accessing internal components

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

Mounting screw for microwave installation and panel assembly. Replace if stripped, missing, or damaged during maintenance. Essential hardware component.