Don S Canton , GA February 06, 2024 Appliance: Bosch Microwave HMV3052U/02 Bosch Microwave Hmv3052u/02: The timing display on a Bosch microwave was disappearing until you couldn't read some of the numbers any more. How to replace Electronic Pc Board (Control Board). I replaced it with a new circuit board and it works great. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes