Bertazzoni Control Timing / Oscillator Fault

Microwave timer counts down too fast or too slow 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

Defective timing oscillator on control board, Control firmware issue, Voltage instability affecting timing circuit

Safety first: No high-voltage work is required for basic checks.

Step 1 – Verify with a clock: Compare a 1-minute microwave timer run with a real clock to confirm the discrepancy.
Step 2 – Power reset: Unplug the unit for 10 minutes and retest.
Step 3 – Stable power: Ensure the microwave is on a stable, dedicated circuit.
Step 4 – Replace control board: If timing remains inaccurate, the control board will need replacement.

Medium 3/5

Main Control Board

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