Parts for Bosch HMV9303/01: Transformer / Plate Parts

If your microwave turntable won't rotate or makes grinding noises, the motor may have failed. This replacement part typically takes 30-45 minutes to install.

If your microwave won't heat properly or shuts off unexpectedly, a faulty thermistor may be the cause. This temperature sensor is essential for safe operation.

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

This high-voltage diode converts the microwave's high-voltage AC to DC for the magnetron so the oven can produce heat. It's a direct electrical replacement that restores the HV supply when the diode is faulty. What it does

• Converts high-voltage alternating current to the DC needed by the magnetron
• Prevents backflow of high-voltage current that can damage other components
• Common symptom: microwave runs but does not heat or produces little/no heat
• Faulty diode can cause blown HV fuse or visible arcing inside the cabinet

What's included

• One high-voltage diode

Install notes

• Disconnect power and allow the capacitor to fully discharge before servicing
• Avoid touching diode terminals or capacitor leads; use insulated tools and follow OEM safety procedures
• Inspect HV fuse and surrounding wiring when replacing the diode

This heat shield protects the oven's rear components by deflecting heat away from wiring and electronics, helping the appliance run safely and reliably. It fits behind the oven cavity and mounts to the rear enclosure. What it does

• Deflects and disperses heat away from control components and wiring
• Prevents heat-related damage to nearby panels and insulation
• Helps reduce localized overheating and related odors or discoloration
• Maintains proper oven airflow and component longevity when installed correctly

• One heat shield

• Disconnect power to the appliance before beginning any work
• Access typically requires removing the oven from the cabinet or removing rear access panels
• Handle edges carefully and wear gloves; secure with the factory screws or clips