Zwilling Noisy Transformer or Fan

Coffee maker makes a high-pitched whine or buzzing noise even when idle.

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

Vibrating power transformer on control board, Worn cooling fan bearings, Electrical noise from power supply

Safety: Unplug before internal inspection.

Identify source: With the cover off (and extreme caution if testing live), locate the noise source—fan, transformer, or other component.
Clean fan: If a fan is noisy, clean dust from blades and replace if bearings are worn.
Dampen transformer: Some vibration can be reduced by tightening mounting screws or adding approved damping material.
Replace noisy parts: If the noise is excessive or indicates imminent failure, replace the fan or power board.

Medium 3/5

Cooling Fan / Power Supply Board

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