Parts for Bosch HBL8750UC/12: Door Asy Parts

Drive belt for microwave turntable rotation. Replace if turntable stops spinning, makes noise, or rotates unevenly. Confirm fit with your model number.

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

This is a door interlock switch that detects whether the microwave door is properly closed and signals the control board to allow operation. It is a critical safety component that prevents the microwave from running with the door open. Replace this switch if the microwave does not start when the door is closed, runs with the door open, or blows a fuse when the door is opened or closed.

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

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 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.

The PC Board is an OEM component specifically designed for Bosch microwaves. As the central control unit, the PC board regulates and monitors the functioning of the microwave features and components. 

Symptoms of a bad PC board include:

• Lights or display not working properly  
• Inability to start or stop the microwave
• Failure of sensor or preset cooking functions
• Random or unexpected operation of buttons/dials

Causes of a bad PC board can be damage from power surges, spilled liquids inside the unit, or normal wear and tear over several years of use.

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

This is a protective cover that sits inside the microwave cavity over the waveguide opening where microwave energy enters the cooking chamber. It prevents food splatter and grease from getting into the waveguide and magnetron components. Replace this cover if it is burned, scorched, cracked, or if you notice arcing or sparking inside the microwave during operation.

Interior tray that holds dishes and components inside your microwave or wall oven. Replace if cracked, warped, damaged, or missing to restore proper support.

Fix a wobbling, scraping, or off-center microwave turntable with this replacement support ring. Restores smooth rotation for even cooking in minutes.

This is a protective cover that sits inside the microwave cavity over the waveguide opening where microwave energy enters the cooking chamber. It prevents food splatter and grease from getting into the waveguide and magnetron components. Replace this cover if it is burned, scorched, cracked, or if you notice arcing or sparking inside the microwave during operation.

Incandescent oven light bulb restores interior illumination so you can monitor cooking without opening the door. Replace when dim or burned out.