Microwave completely dead – no display, no lights, no response when plugged in.
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
Safety first: Unplug the microwave before any inspection.
User-level checks:
- 1. Verify outlet: Plug another appliance into the same outlet to confirm it has power.
- 2. Check circuit breaker: Ensure the household breaker or fuse for that circuit has not tripped.
- 3. Inspect power cord: Look for visible damage, burns, or cuts. If damaged, do not use the microwave.
- 4. Try a different outlet: Plug the microwave into another known-good outlet (no extension cords).
Internal issues: If the unit remains dead, the internal line fuse, thermal cut-outs, or power supply board may have failed. These are located inside the cabinet near live mains and high-voltage components.
Recommendation: Have a qualified technician open the unit, test the line fuse, thermal cut-outs, and noise filter board, and replace any failed parts with Toshiba-approved components.