How do I know if my compressor is damaged?

Determining whether your residential refrigerator compressor is permanently damaged involves observing specific sensory, mechanical, and electrical warning signs. First, go to the rear service panel and listen closely; a damaged compressor remains completely silent or emits a repetitive clicking sound every few minutes as the start relay tries and fails to start the motor. Second, feel the compressor housing; it should feel warm during normal running cycles, not dangerously scorching hot while interior compartments remain warm. Third, use a digital multimeter set to ohms to test electrical continuity across the compressor terminal pins and check for ground faults against the metal casing. You can troubleshoot power delivery safely. You can verify compressor failure when multimeter resistance tests confirm open motor windings or internal electrical shorts.