Lauter oder ausfallender POS-Lüfter? Lager diagnostizieren, reinigen und einen Ersatz treffen

A POS fan that suddenly whines, grinds or rattles is telling you one of two things: it’s clogged with dust, or its bearing is worn. The first is a cleaning job; the second needs a new fan. Either way, don’t ignore it — a struggling fan leads to overheating, throttling and shutdowns. Triage in this order:

First, find which fan, then let the sound tell you the cause:

The bearing is what determines how long a fan lasts and how it ages — worth knowing both to diagnose the noise and to choose a durable replacement:

If the noise is dust, cleaning often fixes it for free. Do it safely:

A sleeve-bearing fan can sometimes be quietened a while with cleaning and light lubrication, but a worn bearing always comes back. When the noise returns, replace the fan rather than re-cleaning it indefinitely.

When it’s time for a new fan, match four specs against the old one — getting size or connector wrong is the most common mistake:

Match the replacement to your terminal and you’re done:

Browse fans and heatsinks in our cooling parts category, related components in terminal repair parts, and boards in mainboards. If the terminal is already overheating or shutting down, work through our overheating & cooling guide; if it won’t power on at all, the won’t-boot guide. Send us the old fan’s size and connector and we’ll match a long-life replacement.