JennAir Power Interruption or Control Board Power Supply Issue

Microwave clock resets or display blanks out intermittently, especially when starting a cook cycle.

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.

Possible Causes

Loose power cord connection, Failing line filter board, Weak internal power supply on control board, Overloaded circuit

Safety First: Unplug the microwave before internal inspection.

Check outlet and plug: Ensure the plug fits tightly in the outlet. Avoid using adapters or extension cords.
Dedicated circuit: Confirm the microwave is on a dedicated circuit and not sharing with high-draw appliances.
Inspect line filter: Access the line filter board and check for loose connections or burned components.
Control board: If external power is stable, the control board power supply may be failing and should be replaced.

Medium 3/5

Line Filter Board

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