Fan making a knocking noise - what does this mean?

[timtim86]

Hello,

A 70mm fan in my system has started to make a rythmic knocking noise as it spins. What the hell does this mean?! Is it on it's way out?

Cheers

[zashark]

i think so my friend! just to make sure it is secured in your case properly, ie nothing rubbing against it? screws tight? if not say good bye my little friend

[zashark]

o yeah sorry forgot to mention, how old is that fan of yours?

[Agent]

Fan making a knocking noise - what does this mean?

Not wanting to sound patronizing here, but it means that its broke

Either buy a new one or have a go at fixing it matey

[Optical668]

Yeh it sounds like its on its way out, sounds like the bearings are dry and wearing down and could do with some little squirts of WD40, but proberly be safer to just replace it.

[timtim86]

Oh bloody hell. It's only about 3 months old, and it's a Shuttle one so it's difficult-ish to find a replacement. Does anyone know of a 70mm fan that can be controlled by bios (4-pin I think) and is fairly quiet? Damn Shuttle!

thanks for the responses

[IAmATeaf]

Not too sure on this but I personally wouldn't use WD40 as initially it may do the job but it'll also catch any dust particles which will do even more damage.

EDIT: Forgot to answer the original question, take the fan out and run it up and see if you can see what the problem is, I've had occurrences of a cable near the fan obstructing the blades and making this type of noise.

[timtim86]

Not too sure on this but I personally wouldn't use WD40 as initially it may do the job but it'll also catch any dust particles which will do even more damage.

EDIT: Forgot to answer the original question, take the fan out and run it up and see if you can see what the problem is, I've had occurrences of a cable near the fan obstructing the blades and making this type of noise.

Ah okay cool, I'll try taking it out and running it to see what happens.

[g8ina]

I was tempted to say it's knockered, but I won't

good luck.

[EtheAv8r]

Oh bloody hell. It's only about 3 months old, and it's a Shuttle one so it's difficult-ish to find a replacement. Does anyone know of a 70mm fan that can be controlled by bios (4-pin I think) and is fairly quiet? Damn Shuttle!

thanks for the responses

If it is only 3 months old, is it not still under warrenty? Could you not contact the original supplier and ask for a replacement fan?

[THCi]

3in1 for teh win. Wont attract as much dust, and is a better lubricant-if not penetrator.

As agent said try and repair it, it aint too hard to repair a fan, just remember to keep the securing ring on the pivot.

[Steve B]

Yeh it sounds like its on its way out

if its knocking, does that not mean its wanting to come in