Coffee maker emits a burning plastic or electrical smell during operation.

Safety first: Immediately unplug the coffee maker and do not continue using it until the cause is identified.

• Inspect exterior: Look for melted plastic around the warming plate or base. Remove any foreign objects that may have fallen onto the plate.
• Check vents: Ensure any bottom or side vents are not blocked by cloths or countertops.
• Internal inspection: Remove the bottom cover and inspect wiring near the heater for melted insulation or burn marks. Replace any damaged wiring with high-temperature rated wire.
• Assess heater and housing: If the heater has warped nearby plastic or shows signs of overheating, replace the heater assembly or the entire unit.
• Do not ignore: Persistent burning smells indicate a fire risk; if you are not qualified to repair, replace the coffee maker.