Bauknecht
Magnetron or High-Voltage Circuit Failure
Microwave runs but does not heat food; turntable and light work normally, no error code displayed.
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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.
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Possible Causes
Failed magnetron, Open high-voltage diode, Defective high-voltage capacitor, Faulty high-voltage transformer or inverter module
How to Fix / Troubleshooting
Critical safety warning: The high-voltage section is extremely dangerous. Do not attempt internal repairs unless you are a qualified technician.
- Step 1 – Confirm symptom: Place a cup of water inside and run on full power for 1–2 minutes. If the water remains cold, heating is not occurring.
- Step 2 – Basic checks: Ensure you are not using metal containers or foil, and that the power level is set to 100%.
- Step 3 – Stop use and unplug: Continued operation may damage components further.
- Step 4 – Professional repair: A technician will test the magnetron, HV diode, capacitor, transformer/inverter, and replace the defective part(s) with Bauknecht originals.
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Repair Difficulty
Professional Required
5/5
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