Clicking or popping noises from inside the refrigerator.

Safety: No disassembly is needed for basic evaluation.

• Observe pattern: Occasional pops and clicks, especially after defrost or door openings, are usually normal.
• Check cooling: If temperatures are normal and the unit cycles on/off normally, the sounds are likely harmless.
• Investigate repeated clicking with no cooling: If you hear rapid clicking from the back and the compressor does not run, the start relay may be failing and should be inspected or replaced.

If in doubt, record the sound and consult a technician, especially if cooling performance is affected.