Panasonic Thermal stress on control electronics or unstable power supply

Oven display and clock reset randomly or flicker when the oven heats up.

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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

Overheating control PCB due to failed cooling fan, Loose mains connection at terminal block, Failing low-voltage regulator, Heat-damaged wiring near control panel

How to Fix / Troubleshooting

Safety: Turn off power before accessing the terminal block or control board.

  • 1. Check mains connection: Inspect the oven’s terminal block where the supply cable connects. Tighten any loose screws and look for signs of overheating.
  • 2. Verify cooling fan: Ensure the top cooling fan runs whenever the oven is heating. Replace if not operating.
  • 3. Inspect control board area: Remove the top cover and check for signs of heat damage around the control PCB. Ensure insulation and wiring are not touching hot surfaces.
  • 4. Power quality: If the issue occurs only when other heavy appliances run, have an electrician check the household supply for voltage drops.
  • 5. Replace control PCB: If resets persist and external causes are ruled out, the control board’s power supply section may be failing and should be replaced.
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Repair Difficulty

Hard 4/5

Required Part

Main Control PCB
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