Microwave runs but does not heat food; turntable and light work normally, no error code displayed.
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: Do not attempt to service the high-voltage section (transformer, capacitor, diode, magnetron) unless you are a trained technician. These components can store and generate lethal voltages even when unplugged.
User-level checks:
- 1. Confirm symptom: Place a microwave-safe cup of water inside and run on full power for 1–2 minutes. If the water remains cold but the turntable rotates and the light is on, heating has failed.
- 2. Check power level setting: Ensure the power level is set to 100% (or "High") and not a low setting.
- 3. Avoid repeated attempts: Repeatedly running a non-heating microwave can further damage components.
Technician-only actions: Diagnose and replace the magnetron, high-voltage diode, capacitor, or transformer as needed, following Blomberg service documentation and proper capacitor discharge procedures.