Freezer not cooling at all; interior is room temperature, compressor not running, lights may still work.

Safety first: Unplug the freezer before accessing the compressor compartment. Use caution around sharp metal edges.

Steps to diagnose no-cool, compressor not running:

• Verify power: Confirm the outlet has power by plugging in another device. Check the freezer's power cord for damage.
• Listen for sounds: When plugged in, listen for a brief hum or click from the compressor area. Repeated clicking every few minutes suggests a start device issue.
• Inspect start relay/overload: Remove the rear lower panel, locate the start device on the compressor, and inspect for burn marks or rattling. Replace the compressor start relay/overload assembly if damaged.
• Check control board output: If comfortable with live testing, verify that the control board is sending line voltage to the compressor when cooling is demanded. If not, the main control board may be faulty.
• Compressor test: If a new start device does not start the compressor and windings test open or shorted, the compressor has failed and requires professional replacement.

Warning: Do not attempt sealed system repairs yourself; they require specialized tools and certification.