Microwave displays E08 and does not heat; sometimes accompanied by unusual humming.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Critical safety warning: Inverter-based Toshiba microwaves use high-frequency high-voltage circuits that are extremely dangerous. Do not attempt to service the inverter or magnetron yourself.
User-level actions:
- 1. Confirm model type: Check the rating label or user manual to see if your Toshiba microwave is an inverter model. E08 is commonly associated with inverter faults.
- 2. Hard reset: Unplug the unit for at least 10 minutes to discharge internal components as much as possible. Plug back in and test with a short 30-second cycle.
- 3. Check for abnormal noise: If you hear loud buzzing or pulsing before E08 appears, stop using the microwave to avoid further damage.
- 4. Avoid repeated attempts: Repeatedly trying to run the microwave with an inverter fault can damage additional components.
Service recommendation: Contact an authorized Toshiba service center. The technician will test the inverter PCB, magnetron, and related wiring and replace the inverter module or magnetron as needed.