Panasonic
Microwave high-voltage circuit partial failure
Combination oven’s microwave function runs but does not heat food; no specific 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
Weak magnetron, Failing inverter module, Open high-voltage diode or capacitor, Door interlock not fully engaging under load
How to Fix / Troubleshooting
Extreme danger: Microwave high-voltage circuits are lethal. Do not attempt internal microwave repairs without proper training and equipment.
- 1. Basic verification: Test with a cup of water for 1–2 minutes. If the water remains cold, the microwave is not heating.
- 2. Avoid repeated tests: Running a non-heating microwave can damage components further.
- 3. External checks only: Ensure the door closes properly and the cavity is clean. Do not open the cabinet or access high-voltage parts.
- 4. Professional service: Contact a Panasonic-authorized service center to test and replace the magnetron, inverter, or other high-voltage components as needed.
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Repair Difficulty
Professional Required
5/5
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