Hmb402 Parts

Replacement interior light bulb that illuminates your microwave or oven cavity for visibility while cooking. Replace when bulb burns out or dims. Verify fit with your model number before ordering.

A replacement control panel push button that restores tactile feedback and lets you select settings from the appliance's front panel. Fits the original switch array to help return normal button operation and user control. What it does:

• Replaces a worn, cracked, or missing control panel push button
• Restores proper button travel and tactile response for reliable input
• Helps address symptoms like buttons that stick, fail to depress, or show cosmetic damage
• Works as a direct-fit user interface button for the front control assembly

• One (1) control panel push button

• High-level replacement: usually pops into the control fascia; access may require removing the outer console or control panel bezel
• Power off and unplug the appliance (or shut off breaker) before any disassembly
• Handle parts carefully to avoid damaging surrounding trim or the button's mounting clips

The Relay is an OEM part for use in Bosch microwaves. This part acts as a safety device, monitoring the temperature within the microwave to prevent overheating. If the microwave reaches an unsafe temperature, the relay thermostat will interrupt the power supply to the heating element or magnetron, effectively halting the cooking process to prevent damage or fire.

The need for replacement can arise from a thermostat that has become overly sensitive or has failed completely, often due to repeated exposure to high temperatures or in the event of a significant overheating incident.

Symptoms of a failing Relay include:

• The microwave unexpectedly turning off during use, especially if it hasn't been running long enough to complete the cooking cycle.
• The microwave refusing to start, which can occur if the thermostat is stuck in the open position, indicating an overheat condition even when the appliance is cool.
• Inconsistent cooking results, where the microwave seems to heat intermittently or not at all, suggesting the thermostat may be cutting off power prematurely.

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

Microwave won't heat or stopped working suddenly? This temperature limiter prevents overheating damage by cutting power when temps get too high. Easy fix.

If your microwave won't heat properly or runs at inconsistent power levels, the inverter control module may need replacement. Moderate DIY repair.

Fix uneven cooking or steam function errors with a new oven steam sensor. This part monitors moisture levels for precise cooking results.

Flat metal washer distributes load under nuts and bolts in your oven. Replace when worn, missing, or damaged to maintain proper alignment. Verify fit.

This electronic control board manages dishwasher cycle selection, timing and user-interface signals so the appliance runs the chosen wash programs. It restores responsive controls and proper cycle sequencing when the original board fails. What it does:

• Receives input from touchpads/controls and starts/stops wash cycles according to selected settings
• Controls timers, relays and communications between components for correct wash/drain/heating actions
• Common symptoms: unresponsive buttons, dishwasher not starting, stuck in one cycle, or inconsistent cycle behavior
• Replaces a defective main control that causes erratic or no control function

• Disconnect power at the breaker or unplug the appliance before starting work
• Handle the board by the edges and avoid static discharge; use an ESD strap if available
• Reinstall mounting screws and connector plugs securely; do not force connectors
• Follow the manufacturer's service instructions for setup, diagnostics or any required configuration

This spacer positions and secures components inside the appliance to maintain proper alignment and prevent contact or vibration. It's a small but important hardware piece for stable, quiet operation. What it does:

• Creates a precise gap between adjoining parts to ensure correct alignment during operation
• Prevents panels and components from rubbing or vibrating against each other
• Helps maintain consistent fit of assemblies after repairs or reassembly
• Can reduce noise caused by loose or misaligned parts

• One spacer

• Disconnect power (and water, if applicable) before beginning any repair
• Remove surrounding panels or components as needed to access the spacer location
• Note orientation and placement during removal so the replacement installs the same way
• Handle small hardware carefully; use magnetic tray to keep fasteners/parts organized

This replacement screw secures appliance panels and components at their mounting points. Swap in a new screw to restore a tight, rattle-free fit when the original fastener is missing, stripped, or corroded.

• Fastens the designated panel, bracket, or component in place
• Replaces a missing, stripped, or rusted screw
• Helps address loose panels, gaps, rattling, or misalignment at the mounting point
• Maintains proper assembly integrity after service or vibration

• Disconnect power; shut off water supply if working near plumbing
• Match to the removed fastener and replace one at a time to preserve alignment
• Start threads by hand to avoid cross-threading; use the correct driver bit
• Tighten snugly and avoid overtightening, especially into plastic or thin sheet metal

Microwave won't power on or turns off unexpectedly? This cable harness restores electrical connections between components. Moderate DIY repair in 1-2 hours.

Fixes microwaves that won't start, stop mid-cycle, or show error codes. This control board restores proper operation and display functions. Moderate DIY repair.

This is a push-button control switch used to complete electrical circuits for appliance functions, restoring responsive button/control operation. It replaces a worn or failed switch to help return normal control-panel behavior. What it does

• Acts as the user-input electrical contact for a specific control or function.
• Completes or breaks the circuit when pressed so the appliance will respond to commands.
• Common symptom: control or button is unresponsive or intermittent.
• Common symptom: the appliance will not start or a function will not engage when the button is pressed.

• One switch.

• Disconnect power before accessing the control panel or wiring to avoid shock.
• Handle the switch and wiring gently to avoid damaging connectors or the control board.

Microwave door won't close or latch properly? This door latch assembly secures the door during operation, allowing cycles to start and run safely.