Frost or ice buildup only on the top shelf or in one corner of the freezer.

Safety first: Unplug the freezer if removing panels.

Steps:

• Check air vents: Ensure vents in the rear or sides are not blocked by food packages.
• Inspect gasket in affected area: Look for gaps or warping where frost is forming. Adjust or replace the gasket if needed.
• Defrost and inspect: Manually defrost the unit and remove the inner rear panel to check for uneven frost on the evaporator. Address any defrost system issues.