Mzb-12A 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.

This is a micro switch that detects whether the microwave door is properly closed and latched. It is part of the safety interlock system that prevents the microwave from operating with the door open. Replace this switch if the microwave does not start when the door is shut, runs with the door open, blows a fuse when the door closes, or stops mid-cycle intermittently.

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

Halogen bulb that illuminates the cavity or cooktop below your microwave. Replace when dim, flickering, or burned out. Confirm fit with model number.

The Switch, Micro is an OEM part for LG microwaves. This micro switch is crucial for the operation of the microwave door mechanism, ensuring that the microwave only operates when the door is securely closed.

Causes of a bad micro switch can include wear and tear from frequent use, damage due to electrical faults, or physical impact that disrupts its functionality.

Symptoms of a bad micro switch include:

• The microwave not starting or stopping unexpectedly
• The door not latching properly
• The microwave light not turning on or off correctly
• Error messages appearing on the control panel

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

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.
 

Fix F4 error codes or sensor cook failures with this microwave humidity sensor. Restores automatic cooking cycles. Moderate DIY difficulty.

Turntable stopped rotating or making grinding noise? This synchronous motor restores smooth tray rotation for even heating. Simple DIY fix with a screwdriver.

Replacement screw for securing panels, brackets, and internal components. Restores tight fit and proper alignment when original hardware is stripped or missing.

Replace your cracked, broken, or missing microwave glass turntable tray. Tempered glass design rotates to provide even heating during cooking.

This thermostat controls refrigerator temperature by opening and closing the cooling circuit as needed to maintain set temperatures. Replaces a failed or intermittent temperature control to help restore consistent cooling and food safety. What it does:

• Senses cabinet temperature and signals the cooling system to cycle on or off
• Stops continuous running when thermostat fails closed or restores cooling when stuck open
• Commonly used to address inconsistent temperatures, warm spots, or compressor short-cycling
• Passive electromechanical component—no programming required

• Disconnect power to the appliance before starting any repair
• Handle terminals and sensor capillary carefully to avoid bending or damage
• Confirm wire connections match the old thermostat and secure spade terminals firmly

Fix uneven heating or wobbling rotation. This microwave turntable assembly includes the glass tray and roller guide for stable, smooth spinning.

This circulating motor drives air movement inside the appliance to maintain proper airflow and temperature distribution. Replaces a worn or failed fan motor to restore normal ventilation and performance. What it does:

• Spins the internal circulation fan to move air through the appliance
• Helps maintain even temperature and proper airflow for cooling/heating cycles
• Common symptom: little or no airflow, unusual grinding or humming sounds

• One circulating motor

• Disconnect power before attempting any service to avoid shock or injury
• Handle the motor and fan blades carefully to avoid damage to fittings and wiring
• Verify mounting orientation and wiring color codes match the original during replacement

Replace your cracked or missing microwave interior metal tray shelf. Provides stable support for food and containers while containing spills.

Microwave light bulb holder assembly secures and powers your interior bulb. Replace if bulb won't light, holder is cracked, or connections are loose. Verify fit by model number before ordering.