Quick tip: Fix noisy volume knobs
Lifehacker describes a quick fix for old volume knobs that cause static and popping when turned up or down. It sounds silly, but just switching the equipment off then turning the volume knob back and forth for a minute or so may get rid of most of the built-up grime that’s causing the static. I actually tried this the stock car radio from my twelve-year-old car and it worked a treat.
