Hmb402 Parts

Microwave won't power on? A blown fuse is often the culprit. This protective component prevents electrical damage from power surges. DIY repair in 1-2 hours.

Light not coming on when door opens or during cooking? This interior light bulb restores visibility inside your microwave or oven cavity.

The Switch is an OEM component specifically designed for Bosch microwaves. It controls critical heating elements and fan functions through the direct user interface. Seamless button response allows convenient operation.

Symptoms of a faulty switch involve non-responsiveness or inaccurate reaction to control presses. Opening from wear over extended usage risks compromised performance warranting replacement. 

Causes of a bad switch include normal degradation inhibiting smooth movements. Exposure to moisture-increasing interior corrosion necessitates a change to restore full functionality.

Symptoms of a bad switch include: 

• Microwave fails to start or prematurely stops cooking cycles  
• Inaccurate power levels result in uneven heating
• Inoperative special features like popcorn do not engage

This OEM Bosch part is also compatible with some Thermador, Blomberg, and Miele microwaves. Replace to maintain dependable command of essential microwave functions.
 

This electrical switch restores reliable on/off signaling for a specific function in your appliance. Replacing a worn or burned switch helps ensure consistent activation and dependable operation of the affected feature. What it does

• Opens and closes an electrical circuit when actuated to start/stop a function
• Sends a clear signal to the control or power circuit for the selected operation
• Failure symptoms include the function not engaging, intermittent operation, or no response when actuated
• Visual clues can include darkened, melted, or loose terminals and an inconsistent click/feel

• 1 switch

• Disconnect power to the appliance before servicing; shut off water or gas if applicable
• Note wire positions and transfer connectors one at a time to the correct terminals
• Seat terminals fully and secure the switch without overtightening; avoid bending the actuator
• Test operation before final reassembly to ensure proper engagement

Fix a microwave or oven that won't start or respond to controls with this switch replacement. Opens and closes circuits to restore reliable operation.

Microwave won't heat but powers on? Replace the high voltage transformer. Also fixes loud humming or blown fuses. Moderate difficulty repair part.

The Cooking Tray is an OEM part for Bosch microwaves. As the centerpiece of the microwave, the cooking tray ensures even cooking by rotating food items during the cooking cycle. It supports dishes and rotates continuously to evenly distribute microwave energy throughout recipes.

Causes of a bad cooking tray can include wear and tear due to extended use over time. Food splatter or spills left inside the microwave may damage or corrode the tray. Accidental dropping or cracking of heavier dishes placed on the tray can also cause issues.

Symptoms of a bad cooking tray include:

• The tray not spinning or rotating properly during cooking
• Unevenly or partially cooked food
• Loud grinding or scraping noises coming from the tray
• Cracks or breaks visible in the plastic surface

This genuine OEM Bosch part is also compatible with Thermador, Gaggenau and select Kenmore models.

Replacement housing cover for microwaves and ovens. Closes and protects internal openings. Restores secure fit when original is cracked, missing, or warped.

Microwave frequency filter prevents electromagnetic interference in control circuits. Replace if experiencing erratic settings or display issues. Confirm fit with your model number before ordering.

Microwave won't heat or shuts off unexpectedly? The thermal relay disconnects power when temperatures exceed safe limits. Protects against overheating damage.

Microwave not heating or humming loudly? This high-voltage capacitor stores energy to power the magnetron. Restores heating performance in 30-45 minutes.

Oven won't start or stop correctly? A faulty micro switch prevents proper sensing of linked mechanisms. This switch restores accurate control signals.

Microwave not heating? A faulty magnetron is the most common cause. This tube generates the electromagnetic waves that heat food. Moderate DIY repair.

Microwave turntable not turning or wobbling? This turntable ring supports the glass tray for smooth, even rotation. Simple DIY fix in minutes.

This replacement cover protects internal components and restores the proper fit and finish of the original assembly. It secures nearby parts and helps prevent debris from entering sensitive areas. What it does:

• Covers and shields internal components from dirt and loose debris
• Secures the assembly and helps reduce vibration or rattling
• Replaces cracked, broken or missing covers that cause poor fit or unsecured parts
• Restores original appearance where the factory cover is damaged or lost

• Power off and unplug the appliance (or shut off circuit) before starting work
• Remove necessary access panels or screws to reach the cover; retain hardware for reassembly
• Align cover before fastening; do not force or over-tighten screws to avoid damage