Microwave runs (light on, turntable turning, fan running) but food does not heat
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: The high-voltage section can be lethal. Only trained technicians should test or replace magnetron, transformer, capacitor, or diode.
- Step 1 – Confirm no heat:
- Place 250 ml of water in a microwave-safe cup and heat for 2 minutes on full power.
- If the water remains cold or only slightly warm, heating is inadequate.
- Step 2 – Basic user actions:
- Unplug for 5 minutes and retry.
- Ensure you are not using metal containers or foil that can affect heating.
- Step 3 – Professional diagnosis:
- A technician will open the unit, discharge the capacitor, and test the high-voltage components individually.
Because of the danger, users should not attempt internal high-voltage repairs; arrange service or replacement of the SilverCrest microwave.