Summit Intermittent Power or Control Board Issue

Microwave clock loses time or resets randomly but unit otherwise works

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 noise filter board, Weak control board power supply, Power line fluctuations

Safety: Unplug the microwave before internal inspection.

User-level checks:

Ensure the plug fits tightly in the outlet.
Avoid sharing the circuit with heavy-load appliances that may cause voltage dips.
Consider using a surge protector rated for microwaves.

Internal checks:

Inspect the noise filter board and power connections for looseness or heat damage.
If connections are solid, the control board may have a failing power supply section and need replacement.

Medium 3/5

Noise Filter Board

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