Freezer not cooling at all; interior remains at room temperature; compressor and fans are not running.

Safety first: Before working on the freezer, unplug it. Do not attempt repairs on live circuits.

Steps:

• Check power source: Verify the outlet has power by plugging in another device. Reset any tripped breaker or replace a blown fuse in the home panel.
• Inspect power cord: Look for cuts, burns, or crushed sections. If damaged, replace the power cord assembly.
• Test outlet and voltage: Use a multimeter to confirm 120 VAC at the outlet (North America). If voltage is low or unstable, contact an electrician.
• Access control board: Remove the rear or top panel to reach the main control board. Check for a blown onboard fuse or visible burn marks. Replace the board if damaged.
• Check internal fuses: Some Insignia boards have a replaceable line fuse. Test for continuity and replace with the exact same rating if open.

When to call a technician: If the board shows no visible damage but the unit remains dead after verifying power, professional diagnosis is recommended.