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Jiggling squirrel cage type fan = Lousy bearings ? Sapphire nightmare !

post #1 of 5
Thread Starter 
The core of the fan jiggle about 1mm up and down, as you can see in the video only after being balanced by hand the fan can begin to spin at high speed.
Same thing as these cards, http://www.overclock.net/t/1140625/broke-two-squirrel-cage-type-fans-while-removing-dusts-video/10#post_15302350
BTW the intel bearing fix worked flawlessly ever since.

How can this not be a manufacturing defect ??? I don't feel like paying again to RMA these crap to get them back 3 month later.
What inner part of the fan is going wrong for this to happen ?

Out of ~40 sapphire card about 30% of them have had fans problems, 50% of those with squirrel cage type fans got noisy, vibrating or broken.

Note : They're in dust free environment and are fixed at ~55-60% speed. 40% for blower type fan.
Edit : yes, Those are mining rigs working 24/7. still this shouldn't happen.
post #2 of 5
I would agree with you, it is a defect... both with the design and QA. Most of these fans are cheap sleeve bearing, the worst possible type of fan to run horizontal (blowing up or down) which 99% of all end-users mount their cards in this orientation. Though even mounted vertically, some fans don't work right either. The fan size is also a design defect. Since a bigger, better quality fan would make the card unusable for most, especially those wanting dual card setup.

Anyway, I don't know where you are pulling those numbers from, but they manufacture these in the tens of thousands. A percent of failures are accounted for but nothing really changes (the fan assembly is still the cheapest part of the card). The best thing you can do is take advantage of the warranty (yes RMA again), or replace with an after-market solution thumb.gif
Edited by gymenii - 4/19/12 at 1:00am
post #3 of 5
You might look for an aftermarket cooler for your card.
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post #4 of 5
Thread Starter 
Quote:
Originally Posted by AMOCO View Post

You might look for an aftermarket cooler for your card.
Thanks for that idea, doh.gif

Between this and filling a class action lawsuit against Sapphire I'd much rather replace the fans with quality ones.
post #5 of 5

I had to replace the stock reference fan of a 5870 before.

The 5970 that I use to have had the same issue as well.

Looks like the 58x0 and 59x0 series had defective fans.

 

It's quite easy to replace them and you could find it on eBay.

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