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There's a sparrow in my PSU?!? (strange sound)

post #1 of 8
Thread Starter 

OK, this must be thousandth thread on strange noises coming from a PSU but there we go again:

The story:
After heating up, my PSU (cannot be 100% sure but it's most probably the PSU) start making low volume high-pitched tweets, just like if there's a sparrow trapped inside the damn thing Really.
It doesn't go away when the system load decreases, it just become less frequent. System load never goes over 410watts according to my Zalman fan-controller-system-monitor-gadget-thing. Since the PSU can handle 850 and is less than one year in use, I'm at a loss here.
Once again, it's not a buzzing sound, nor a whining-squealing sound like on this other thread, it's a tweeting sound, just like

only lower in volume, as if the bird is trapped inside a glass or far away, but easily audible anywhere near the case (5m radius or more if silent).

The confusing details:
I had a similar sound (as far as I can remember) coming from the previous Antec Earthwatts 650w that was powering this system. Back then, instead of Thermi, I had my excellent Sapphire 5850 there, and different case fans as well. So how can it be making the same sound?! Could it be coming from some capacitor on the mobo?! Some choke!? Something else that could tweet on a mobo!? It stop right after changing the PSU to the present Corsair and so I thought it was a "problem" on the Antec PSU, although it always worked perfectly as far as I could see.
The noise got me thinking on my DVD drive (it does sound like a DVD drive loading a disc or making a read some times) but the drive then was different from the one I have now, and it happens when theres no disc inside; and also it certainly doesn't seem to come from there, but from the bottom back end of the case, where the PSU sits.
The mobo looks perfect except for a small leak from the north bridge that doesn't even reach the first PCI, and looks nothing out of the ordinary.
Furthermore, here in Japan the lines are usually quite good and "clean" so I don't know whats going on.

Can anybody give me some help, please?
post #2 of 8
If you are 100% certain that the noise is coming from your PSU then the second post down on this thread sums up your problem.

Maybe someone here can help you solve the problem, but I would RMA the PSU if that is an option.
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post #3 of 8
Thread Starter 
Damn, so I just had bad luck and had it again on the new PSU (after the Antec one I mean)?
If there's no problem, I would rather not replace the unit cause it would be a bloody pain in the ***
post #4 of 8
Is your PSU using Twitter?

In all honesty I would call Corsair up and ask them what the deal is. I don't know if they have any RMA places local to Japan but it might not hurt to ask. Hell if they're selling it there and it comes with a 7 year warranty I would hope they have International support.
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post #5 of 8
Damn OCN double posting.
Edited by blackbalt89 - 2/21/11 at 9:22pm
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post #6 of 8
I fear that it's much worse than we originally suspected...it's not a Sparrow...it's...a...SPEARROW!





Ahem, sorry. I have no idea what's going on with your PSU. If I were in your position, I'd order a replacement (so I didn't have to go without a computer) and then do an RMA of your existing supply.
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post #7 of 8
It could very well be your video card. Hold something up to your ear - like a straw or a funnel and point it at the various parts in your computer.
If it's your video card its no big deal, but if its your PSU RMA it.
post #8 of 8
Thread Starter 
Well, it's "fixed"!
After taking a look around the web, I stumbled upon a sticky on Corsair's forum (here) that gave some strange tips to try solving the noises, before asking to RMA.
Among these things, they suggested turn off C1E and/or EIST, and even enabling Vsync (yeah, I know, it sounds like bull****).

But, I was shocked to realize that disabling C1E made the noises stop completely!

I believe most here at OCN would already have disabled the damn power saving stuff but I had it on for I was leaving the CPU only mildly OCed (160, and multiplier on AUTO). But anyway, I think anyone out there with a noisy, clicking, chirping, whining or even tweeting PSU should give this a try before thinking of disassembling the system or RMA. I would even suggest that this "tips" from Corsair be added to some sticky on the PSU section.
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