Mmv4203wb-O Parts

The Ring-Turn is an OEM part for Whirlpool microwaves. Designed with precision, this component plays a crucial role in the microwave's turntable system, supporting the glass plate and ensuring it rotates smoothly during operation. The ring-turn's seamless integration with the microwave design allows for the even distribution of microwave energy, which is essential for consistent cooking and heating results.

Causes of a bad Turntable Ring can include cracks or breaks developing from years of use rotating the turntable back and forth under high heat levels.  

Symptoms of a bad Ring-Turn include:

• The microwave turntable not rotating properly
• Unusual noises during operation, indicating a misalignment or damage
• The glass plate not sitting flat or slipping during use
• Uneven or partially cooked food, resulting from improper rotation

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

The Switch is an OEM part for Whirlpool microwaves. It controls the turning on and off of power to the microwave during cooking cycles as well as detects positions within cycles to signal appropriate actuations of the microwave's magnetron, fans, and lights. The switch is a crucial electrical component that facilitates the fully automatic operation of preset cooking programs.  

Causes of a bad switch can include wear and tear over time or unexpected surges that cause electrical component failure.

Symptoms of a bad switch include:

• Cooking programs failing to advance properly or stopping mid-cycle unexpectedly
• The microwave failing to turn on or experiencing power issues  
• Random noises, humming, or lights occurring when the microwave is supposed to be idle
• Buttons or controls acting intermittently unresponsive

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances. 

The Air Damper is an OEM part for Whirlpool microwave/range hood combos. It is a crucial component that regulates the flow of air into the microwave cavity, helping to maintain proper temperature and airflow during operation.

Symptoms of a faulty Air Damper include:

• Overheating or uneven heating of food items
• Excessive noise or rattling sounds during operation
• Error codes related to temperature or airflow issues

Causes of a bad Air Damper can include wear and tear over time, physical damage or obstruction, or issues with the damper's motor or control system.

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore microwave models.

The Diode is an OEM part for Whirlpool microwaves. The diode plays a key role in regulating power flow and protecting other sensitive components from voltage fluctuations.

Causes of a bad microwave diode can include component failure due to age or heat exposure over time. Diodes are also susceptible to electrical damage if exposed to power surges.

Symptoms of a bad diode can include:

• The microwave failing to power on or having intermittent power
• Food not heating up properly or unevenly
• Strange sounds like buzzing or humming emanating from inside
• The door lock mechanism not engaging or release properly
• Repeated tripping of fuses or circuit breakers

This genuine OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

The Interlock Spring is an OEM part for Whirlpool microwaves. It is located within the door assembly and provides proper tension to assist with smooth opening and closing of the microwave door. The spring allows for controlled movement that facilitates easy access when using the microwave.

Causes of failure could be normal wear and tear over time, damage from rough or forced handling of the door, or failure from excessive use.

Symptoms of a bad microwave spring include:

• Difficulty opening or closing the door
• The door not staying securely closed or popping open on its own
• Excessive vibration or noise related to door operation

This is a genuine Whirlpool OEM replacement this part is also compatible with Maytag, Jenn-Air, and some Kenmore models.

The Switch is an OEM part for Whirlpool microwaves. This switch is crucial for the proper operation of the microwave, as it ensures the correct function of the door mechanism and the control panel. 

Causes of a bad microwave switch can include wear and tear over time, damage due to frequent use, or electrical faults that prevent it from functioning correctly.

Symptoms of a bad microwave switch include:

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

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

The Cooking Tray Coupler is an OEM part replacement part for Whirlpool microwaves. It securely connects the two halves of the microwave cooking tray together, allowing for easy placement and removal of food items. 

Symptoms of a bad cooking tray coupler include:

• The cooking tray separating into two loose pieces that do not stay connected
• Food sliding off or falling through gaps in the disconnected tray halves 
• Inability to use the microwave cooking tray properly

Causes of a bad coupler can be cracks, breaks, or wear over time that compromises its connecting ability. 

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

Note: This coupler is compatible with the glass tray that has the 3 half circles that engage the coupler. In some cases, the factory used a tray that has 3 triangles. For that coupler, use part# W11245707.

The Magnetron is an OEM part for Whirlpool microwaves. This part generates the microwave energy necessary for cooking and heating food.

Causes of a bad Magnetron can include normal wear and tear over time, power surges or electrical issues, or physical damage from impact or mishandling.

Symptoms of a bad Magnetron include:

• The microwave not heating or cooking food properly
• Arcing or sparking inside the microwave cavity
• Strange noises or buzzing sounds during operation
• Burning smells or smoke coming from the microwave

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

For mounting also consider WPW10269225 mounting plate

This stainless-finish vent grille covers the microwave's front top vent. It directs airflow and restores a clean, finished look when the original grille is cracked, damaged, or missing. What it does:

• Covers the front ventilation opening and directs airflow
• Shields internal components from debris while allowing air to pass
• Restores the finished appearance of the unit
• Common symptoms: cracked/broken grille, loose or won't stay attached, missing tabs, discoloration

• 1 vent grille in a stainless finish

• Disconnect power to the microwave before servicing
• Remove the top screws securing the existing grille; slide to release if applicable
• Position the new grille and secure with the original screws; avoid overtightening
• Use caution around sharp edges; wear cut-resistant gloves if needed

The Reflector is an OEM part for Whirlpool microwaves. It is located inside the microwave cavity behind the waveguide and works to redirect electromagnetic waves for more even cooking.  

Symptoms of a damaged reflector include:

• Inconsistent or incomplete heating of foods during cooking
• Hot and cold spots forming within the microwave cavity
• Lower overall power output from the microwave

Causes of reflector damage can be cracking or pitting of the reflective aluminum surface over multiple heating cycles. Impact incidents from user error may also damage its shape.

This OEM Whirlpool replacement assists in delivering uniform energy distribution for optimal microwave performance. This part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, and Roper microwave models.

Color: Black

Comes with 4 supports. Color: chrome.

This support secures and stabilizes a mating component inside your appliance, helping restore proper alignment and fit. Replace a damaged or missing support to stop wobble, sagging, or misalignment.

• Provides structural backing to keep the attached part level and in place
• Helps eliminate rattling, shifting, or uneven gaps
• Replace if cracked, deformed, or missing
• Symptoms can include loose or sagging parts, poor alignment, or difficulty reinstalling shelves/panels

• Disconnect power (and shut off water, if applicable) before service
• Remove the affected shelf/drawer/panel to access the support
• Transfer and reuse any model-specific fasteners or clips
• Seat the new support fully and check alignment before reassembly

This magnetron capacitor is the microwave high-voltage capacitor that helps supply the magnetron with the pulse of energy needed to produce heat. Replacing a failing capacitor restores normal heating performance and reduces arcing or loud humming. What it does

• Stores and releases the high-voltage pulse required by the magnetron so the microwave can generate heat.
• Prevents unstable magnetron operation that can cause weak or no heating.
• Common symptoms of a failing capacitor: oven runs but doesn't heat, intermittent heating, loud buzzing/humming, or visible arcing inside the cavity.
• A failed capacitor can also cause blown internal fuses or tripped circuits.

• One capacitor.

• Disconnect power and verify the appliance is completely de-energized before servicing.
• Capacitors can hold dangerous charge; discharge the capacitor safely with an insulated tool.
• Use the exact replacement part and follow the appliance service manual for routing and connections.

Color: White