Oven heats but bakes unevenly; food is burnt on one side and undercooked on the other.

Safety first: Turn off power and gas (for gas models) before removing internal panels.

• Rack and pan placement: Ensure racks are level and pans are centered. Avoid overcrowding the oven.
• Clean burner and ports (gas): Remove the bottom panel and clean the burner ports with a soft brush. Ensure flame is even along the burner.
• Check convection fan: On convection models, remove the rear interior panel to access the fan. Spin the fan by hand; it should move freely. If noisy, stiff, or not running during convection mode, replace the fan motor.
• Inspect baffle and shields: Ensure the convection baffle and any heat shields are properly installed and not bent.

Note: Use an oven thermometer in multiple positions to confirm temperature uniformity after repairs.