Emerson Intermittent Power or Control Board Issue

Microwave clock resets randomly or display blinks off and on.

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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, Failing line filter board, Cracked solder joints on control board, Power line fluctuations

How to Fix / Troubleshooting

External checks:

  • Ensure the plug fits snugly in the outlet; avoid loose or worn outlets.
  • Do not use extension cords or adapters.

Internal inspection (unplugged):

  • Inspect the line filter board and control board for loose connectors or signs of overheating.
  • Gently wiggle connectors while the unit is unplugged to ensure they are secure.

If the problem persists, a technician should check for cold solder joints or replace the affected board.

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Repair Difficulty

Medium 3/5

Required Part

Line Filter Board
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