Teka No Heating / Reduced Microwave Power

Microwave runs (light, fan, and turntable operate) but food remains cold or only slightly warm.

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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

Weak or failing magnetron,Faulty high-voltage capacitor,Defective high-voltage diode,Incorrect power level setting

How to Fix / Troubleshooting

Safety: High-voltage components are dangerous. Limit yourself to external checks unless qualified.

User checks:

  • Verify that the power level is set to 100% (or maximum) and not to a low setting or defrost mode.
  • Test with a known load: heat 250 ml of water for 2 minutes; if barely warm, heating is inadequate.
  • Ensure you are not using metal or thick ceramic containers that can slow heating.

If still no heat:

  • The magnetron or high-voltage circuit is likely faulty and requires professional diagnosis and replacement.
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Repair Difficulty

Professional Required 5/5

Required Part

Magnetron
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