Hamilton Beach Relay / Triac Operation or Loose Component Vibration

Unusual clicking, buzzing, or humming noise from the base during cooking.

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

Normal relay switching amplified by loose mounting, Loose heating plate screws, Vibrating control board or transformer, Failing relay or triac arcing

Safety first: Unplug the unit before tightening any internal components.

Determine if normal: Occasional soft clicks during heating cycles can be normal. Loud or continuous buzzing is not.
Tighten hardware: Remove the bottom cover and tighten screws securing the heating plate and control board.
Inspect relay/triac: Look for signs of arcing or burning around the heater relay or triac on the control board. Replace the main control PCB if damage is found.
Secure wiring: Use cable ties to prevent wires from vibrating against the housing.

Medium 3/5

Main Control PCB

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