There is a specific, muted satisfaction to using a paper shredder. It is the sound of bureaucracy being unmade—the rhythmic whirr-hum-whirr of secrets turned into confetti. That is, until the machine lets out a pathetic groan and stops dead, leaving a half-shredded tax document hanging from its jaws like a tongue.

Screwdrivers (Torx often required), multimeter, plastic-safe lubricant.

Reassemble the casing loosely. Plug it in and test the "Forward" and "Reverse" functions. Listen for a smooth, consistent whir. If the motor struggles, you missed a clog. If it runs smoothly, tighten the screws.

Before replacing a jammed or non-starting shredder, many common problems can be fixed at home. This guide covers the most frequent mechanical and electrical failures.