Insignia Intermittent Power Loss to Control Board

Microwave clock and settings reset every time the door is opened or when cooking ends.

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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

Loose power cord connection,Defective line filter board,Cracked solder joints on control board,Failing internal power supply

How to Fix / Troubleshooting

Safety Warning: Unplug the microwave before accessing internal components.

Steps:

  • Ensure the power cord is firmly plugged into a stable outlet.
  • Avoid using loose or worn extension cords or power strips.
  • If the issue persists, internal connections may be loose.

Technician-level:

  • Inspect the line filter board and control board for loose connectors.
  • Check for cracked solder joints on the control board power input and repair or replace the board.

Because intermittent power can lead to unpredictable behavior, have the unit serviced if resets continue.

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Repair Difficulty

Medium 3/5

Required Part

Noise Filter / Power Input Board
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