Candy No Heating – High-Voltage System Failure

Microwave runs but does not heat food; light and turntable operate 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, Defective high-voltage transformer, Faulty high-voltage capacitor, Faulty high-voltage diode

How to Fix / Troubleshooting

Critical safety warning: The high-voltage section can be lethal. Do not attempt internal repairs unless you are a trained technician.

User-level diagnosis:

  • Place a large mug of water in the center of the turntable.
  • Run the microwave on full power for 2 minutes.
  • If the water is still cold or only slightly warm, the unit is not heating correctly.

What you can safely do:

  • Verify that you are not using metal containers or foil.
  • Check that the door closes firmly and the interior light comes on.
  • If there is a strong burning smell, loud buzzing, or visible sparks, stop immediately and unplug.

Next steps: Internal diagnosis (magnetron, transformer, capacitor, diode) must be performed by a qualified Candy technician. Keep the unit unplugged until inspected.

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Repair Difficulty

Professional Required 5/5

Required Part

Magnetron
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