E10
Proline Control PCB Failure or Firmware Corruption

Microwave display shows E10 and unit is completely unresponsive to keypad input.

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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 main control board, Corrupted firmware after power surge, Shorted low-voltage regulator on PCB, Damaged display/CPU circuit

How to Fix / Troubleshooting

Safety first: Unplug the microwave before any inspection.

User-level steps:

  • Power cycle: Unplug for 10–15 minutes, then plug back in to see if the control resets.
  • Check power source: Test the outlet with another appliance to ensure proper voltage and stability.
  • If the display still shows E10 and no keys respond, the control board is likely defective.

Next steps:

  • The main control PCB will usually need replacement. This involves removing the cabinet and disconnecting multiple harnesses.
  • Have a qualified technician source the correct Proline control board and install it.
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Repair Difficulty

Hard 4/5

Required Part

Main Control PCB
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