Panasonic Primary power supply or safety device failure

Oven does not power on at all; no display, no light, completely dead.

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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

Blown main fuse, Tripped thermal cut-out on top of cavity, Loose mains connection at terminal block, Failed main control PCB

How to Fix / Troubleshooting

Danger: Work on mains connections only if you are competent. Always isolate power at the breaker and verify with a tester.

  • 1. Check household breaker: Ensure the circuit breaker or fuse feeding the oven has not tripped or blown.
  • 2. Inspect terminal block: Access the rear of the oven and check the mains terminal block for loose or burnt connections.
  • 3. Test main fuse: Many Panasonic ovens have an internal fuse near the power entry. Test and replace with the exact same rating if blown, but investigate the cause of failure.
  • 4. Thermal cut-out: Locate the main thermal cut-out on top of the cavity. Test for continuity; if open and non-resettable, replace it.
  • 5. Control PCB: If power is present at the board but there is no response, the main control PCB may be defective and require replacement.
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Repair Difficulty

Hard 4/5

Required Part

Main Thermal Cut-Out / Safety Thermostat
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