Thermador Microwave Oven Combo SEM302BB Parts

This is a micro switch used in the microwave door interlock system. It detects whether the door is properly closed and signals the control board to allow or prevent microwave operation. Replace this switch if the microwave won't start, runs with the door open, or if the door latch clicks but the unit doesn't respond.

The Bulb is an OEM part for Bosch ovens. This component provides illumination inside the oven, allowing you to easily monitor the cooking process without opening the door and losing heat.

Causes of a bad bulb can include filament burnout due to extended use, electrical issues that cause power surges, or physical damage from accidental impacts. 

Symptoms of a bad bulb include:

• The oven light not turning on
• Flickering light inside the oven
• Dim or uneven lighting
• The bulb appearing visibly damaged or burnt out

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

Heat-resistant seal for 30-inch ovens. Replace when worn or damaged to prevent heat loss and maintain consistent baking temperatures. Verify fit.

Replacement inner glass panel for oven doors. Installs between door layers. Needed when original glass is cracked, chipped, or shattered from impact.

This meat probe sensor is a temperature-sensing device that inserts into food while it cooks in the oven, allowing the oven to monitor the internal temperature and automatically stop cooking when the target temperature is reached. It connects to a jack inside the oven cavity via a heat-resistant cable. Replace this probe if your oven no longer reads the food temperature accurately, displays a probe error code, or if the cable or tip is visibly damaged.

Oven won't heat or shuts off during use? This thermal fuse cuts power when temperature exceeds safe limits. Moderate DIY repair with multimeter testing.

A replacement temperature sensor (thermistor) that monitors internal temperatures and sends readings to the appliance control board. Restores accurate temperature sensing to help cycles and temperature regulation run correctly. What it does:

• Measures internal temperature and relays readings to the control board so the appliance can adjust heating/cooling cycles.
• Helps ensure proper defrost or cycle timing by providing accurate temperature feedback.
• Common symptoms of a failing sensor: inconsistent temperatures, frequent or short cycling, or temperature-related performance issues.
• Works as a direct replacement for a worn or failed sensor to restore normal temperature monitoring.

• Disconnect power to the appliance before starting any repair to avoid shock or damage.
• Handle the sensor and wiring gently; avoid kinking or pulling the lead and ensure the connector seats fully.
• Installation typically requires access behind panels or inside the compartment—keep fasteners organized and follow the service manual.

If your oven won't start or runs with the door open, this door interlock switch detects proper closure and latching. DIY repair in under an hour.

This Fan is an OEM part for Bosch Ovens. The fan ensures consistent and even distribution of heat throughout the cooking chamber.  

A common cause of a malfunctioning Fan is motor failure due to prolonged usage or accumulation of dirt and debris around the fan blades. 

Symptoms of a faulty Fan may include:

• Uneven cooking or baking results
• Unusual noises during oven operation
• Failure of the oven to reach or maintain desired temperatures

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

This is a thermal fuse designed to protect the microwave's electrical circuit from overheating. It acts as a safety device that breaks the circuit if internal temperatures exceed safe limits. Replace this fuse if your microwave suddenly stops working or loses all power, as a blown thermal fuse is a common cause of a completely dead unit.

Fix intermittent power or component failure with this range socket electrical connector. Restores secure wiring connections in electric and gas ranges.

Microwave not heating? This magnetron generates the microwaves that cook your food. Common fix when your microwave runs but won't heat food properly.

Oven lamp assembly provides interior lighting for viewing food during cooking. Replace when bulb burns out or housing cracks. Verify fit with your model.

This is a high voltage capacitor used in the microwave's magnetron circuit to store and release electrical energy needed to power the magnetron tube. It works together with the diode and transformer to generate the high voltage required for microwave cooking. Replace this capacitor if the microwave runs but does not heat food, makes a loud buzzing or humming noise, or if diagnostic testing shows the capacitor has failed. Warning - capacitors can retain a lethal charge even when the appliance is unplugged, so discharge it safely before handling.

Replacement mounting nut for securing internal oven and range components. Needed when original fastener is stripped, missing, or damaged during repair work.

This latch control board is the door latch circuit board that detects and secures the door closure so the appliance can start and run. Replaces a failed latch board to restore proper door-detection and lock signaling. What it does:

• Detects door closure and sends the lock/unlock signal to the main control
• Engages the door latch/lock circuit so the unit can begin its cycle
• Prevents operation when the door is not properly secured
• Can resolve symptoms like the appliance not starting or not recognizing a closed door

• Disconnect power before beginning any repair to avoid shock or damage
• Handle the board by its edges and avoid contact with component leads
• Verify connectors and door latch alignment before final reassembly