Swan Timing / Control PCB Clock Error

Microwave display works but counts down too quickly or too slowly compared to real time.

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

Faulty control PCB timing circuit, Power supply instability to control board, Software glitch in microcontroller

Safety: Unplug before accessing internal boards.

Step 1 – Power reset: Unplug the microwave for 10 minutes to reset the control electronics. Reconnect and test timing with a known interval.
Step 2 – Verify power supply: Ensure the microwave is connected to a stable mains supply, not an undersized extension lead.
Step 3 – Control PCB replacement: If timing remains inaccurate, the control PCB is likely defective and should be replaced with the correct Swan part.

Hard 4/5

Main Control PCB

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