When your kitchen hood malfunctions, quick repairs can prevent further issues. Start by checking the power source; ensure the hood is plugged in and the circuit breaker isn't tripped. If the fan or lights aren't working, the motor or bulbs may need replacing. Grease buildup can hinder performance; clean filters regularly. Strange noises may indicate loose parts or worn bearings, necessitating tightening or replacement. For complex issues, consult a professional to ensure safe and effective repairs.