Swan Intermittent Power Loss to Control Board

Microwave clock and settings reset themselves randomly.

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 mains plug or socket, Faulty internal power filter board, Cracked solder joints on control PCB, Power surges

Safety: Unplug before opening the cabinet.

Step 1 – Secure power connection: Ensure the plug fits tightly in the socket. Avoid wiggling or strain on the cord.
Step 2 – Inspect internal connections: Check the mains filter board and control PCB connectors for looseness or discoloration. Reseat as needed.
Step 3 – Surge protection: Use a quality surge protector to reduce damage from mains spikes.

If resets continue, the control PCB may have failing components or solder joints and should be repaired or replaced.

Medium 3/5

Mains Filter Board

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