I fixed mine, it was improperly assembled out of the box and did the clicky grindy bit since it hangs down too low under gravity. It's been fine for a couple months now. Take off the sticker, pop off the plastic plug, very carefully remove the plastic collar that fits into the groove on the shaft while pushing said shaft downward and observe the orientation/position of the rubber o-rings on both sides of that shaft. The fan needs to stay in a certain vertical height range to work, if it drops too far it's ratty sounding. I cleaned mine up, re-lubed with synthetic oil and replaced the o-rings with more appropriate sized parts to keep it from dropping too far (or from being too tight, it's a balance) and it's OK now. It basically rides on the o-rings but give the small weight and RPM involved and given good lube I think it'll run for awhile. I have some crappy pics somewhere if you can't figure it out. I was going to just buy another one but I couldn't find any reviews of 200MM fans that didn't say they sucked, and I suspect it's from them all being made basically the same internally, and that design not lending itself to hanging horizontally well. "Real" fans have much more substantial pieces to locate there guts than these. I wish Noctua would make one, it'd probably cost $50 but I bet it would work well. It's a shame I had to do this on a band new case, but for what the thing cost for what it is compared to a nice tower from years back, I can live with it I guess.
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