Anne K Santa Fe , NM August 19, 2023 Appliance: Bosch Microwave HMV5051U/01 Bosch Microwave Hmv5051u/01: Inside light not working. How to replace Lamp (Light Bulb). Very simple fix. Just replaced the bulb following the directions in the Microwave users manual. Took approximately 15 minutes. The instructions in the Bosch manual were good. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes