I have an older refrigerator (~10 years?) that came with the house I bought 2 years ago.
It's always made occasional noises, which I chalked up to the motor and/or ice maker starting.
Lately, the noises are more frequent and sound like a loud metallic gong. I think it's coming from the water line, but I don't see any obvious problems.
Any idea what could be causing this, and how to fix it?