AEG
No Heating – Magnetron / High-Voltage Failure
Microwave runs but does not heat food; 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, Defective high-voltage transformer, Faulty high-voltage diode, Blown high-voltage capacitor
How to Fix / Troubleshooting
Critical safety warning: High-voltage components inside AEG microwaves are extremely dangerous. Only qualified technicians should service the high-voltage section.
- Step 1 – Confirm symptom: Place a cup of water inside and run on full power for 1–2 minutes. If the water remains cold and the turntable and light work, heating has failed.
- Step 2 – Basic user checks: Ensure you are not using metal containers or foil, and that the power level is set to 100% (or appropriate level).
- Step 3 – Internal diagnosis (technician): A technician will test the magnetron, transformer, diode, and capacitor with appropriate tools and replace the failed component(s).
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Repair Difficulty
Professional Required
5/5
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