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CX600M weird fan issue


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Hope anyone can help me: I have a small system with a CX600M power supply. The fan itself runs at a relatively low speed but every once in a while it slows down (couple of times in a row) making a whirring noise (like a vibration) before spinning back up to its usual low rev state. Does that a couple of times and then the cycle starts again after a couple of minutes.


Any thoughts? When the fan runs at the regular speed, there is no noise at all, only when it momentarily spins down a bit. It does not come to a complete stop tho.


Help appreciated!!



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