Microwave runs but does not heat; turntable rotates and light is on, but food remains cold with no error code.
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 system is extremely dangerous. Do not attempt to service the magnetron, transformer, capacitor, or diode unless you are trained and equipped to safely discharge the capacitor.
User-level checks:
- 1. Confirm no heat: Heat a cup of water for 1–2 minutes. If it stays cold, heating is not occurring.
- 2. Listen and observe: Note if you hear the usual deeper hum when heating starts. Absence of this sound may indicate a high-voltage issue.
- 3. Check for burning smell or noise: If you smell burning or hear loud buzzing, stop using the microwave immediately.
- 4. Do not open high-voltage section: Limit inspection to visual checks with the cover on. Internal high-voltage diagnosis should be done by a professional.
In most cases, this symptom requires replacement of the magnetron or another high-voltage component by a qualified technician.