Smoker emits a loud humming or buzzing sound when heating.

Safety first: Unplug the smoker before touching any internal components.

• Identify source: With the smoker briefly powered (and safe to observe), listen carefully to locate the buzzing area, then unplug before touching.
• Tighten components: Secure any loose relays, transformers, or mounting screws on the control board and cabinet.
• Isolate element: Ensure the heating element is not touching the cabinet walls; adjust brackets if necessary.
• Use surge protection: A quality surge protector can sometimes reduce line noise that contributes to hum.