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PSU blowing exhaust INTO my case

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September 23, 2011 2:44:10 AM

Hi Guys,
i haven't been able to keep my Lian Li PC-61 case cool enough without removing the side panel, so I'm reworking my airflow.

I noticed that my Corsair 750TX PSU draws air from it's rear panel and then exhausts it downward inside my case -toward my CPU and expansion cards. The air doesn't feel too hot, but I want to be drawing air from the bottom/front of my case instead and the 140 CFM of air that the fan moves really throws off my inflow/outflow ratio . . .

Any ideas? Is this PSU supposed to do this?

Thanks Much,
Richard

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a c 104 ) Power supply
September 23, 2011 3:10:22 AM
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Your psu should blow air out of the rear mesh, not suck it into it,
Cover the rear of the psu with a sheet of A4 and power on, does it blow away or stick to the psu/pc?
If it is in fact sucking, get Corsair to replace the psu as its not suppose to work that way,
Also, does your case have venting at the bottom under the psu?
And which way up is the psu in your case? Fan up or down?
You should not see the fan, it should be at the bottom of the case, **Edit although your case is a top-mounted psu, you should be able to see the fan from inside your pc, i assumed it was bottom mounted sorry**
Moto
a b ) Power supply
September 23, 2011 3:34:17 AM

Are you sure??? Just because the fan is on the bottom of the psu, doesnt mean thats where the air comes out. It blows through the psu and out the back mesh as said above.
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a b ) Power supply
September 23, 2011 5:00:53 AM

Yup, PSU should definitely blow air outward not into the case.
Anonymous
September 23, 2011 12:59:10 PM

@beenthere

*** OVERCLOCKING IS A JOURNEY OF DISCOVERY FILLED WITH ADVENTURE. IT IS NOT A DESTINATION. ***

There, fixed that sig for you!

On Topic, another vote for your PSU is blowing the wrong way!
September 23, 2011 1:03:25 PM

Carefully take apart your PSU, turn the fan around... put it back together. Problem solved
September 23, 2011 1:09:04 PM

Don't void your warranty by opening up your power supply.
Cosair will be happy to replace it.
September 23, 2011 1:18:11 PM

Rogue77777 said:
Don't void your warranty by opening up your power supply.
Cosair will be happy to replace it.


This is true if your power supply is still under warranty. You'll be without a PC for probably a week or two while you ship it back to them and receive the replacement.

OR you could forget about the warranty which usually doesn't cover the entire life of the unit anyway and just fix the problem in 3 minutes.
September 23, 2011 1:23:45 PM

If it is out of warranty it is easy to open the PS case open, flip the fan around and screw it back together.
a c 243 ) Power supply
September 23, 2011 1:47:12 PM

The chances of the fan being mounted in reverse are extremely slim, and something that can be visually checked.

The way the cooling is designed there is some blowback into the case, see photo 2
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...

Do as moto suggested and try the paper trick, then let us know if it is exhuasting or not.
a b ) Power supply
September 23, 2011 1:47:47 PM

the first question is, is it actually doing that...
September 23, 2011 1:54:57 PM

right, but since that was already asked and posted about, i figured that I'd move on
a b ) Power supply
September 23, 2011 2:41:57 PM

Anonymous said:
@beenthere

*** OVERCLOCKING IS A JOURNEY OF DISCOVERY FILLED WITH ADVENTURE. IT IS NOT A DESTINATION. ***

There, fixed that sig for you!

On Topic, another vote for your PSU is blowing the wrong way!



It's only an adventure for us who enjoy it! :D  For those who get frustrated or expect instant gratification, it is extremely frustrating. :( 

If the PSU fan really is installed backwards then the OP might be able to get a cross-shipped replacement PSU so as to not be without a PC for a week?
a b ) Power supply
September 23, 2011 2:55:42 PM

Just to confirm I have that exact PSU and it blows air out of the back
a c 104 ) Power supply
September 23, 2011 3:46:24 PM

I find it difficult, although not impossible that the psu is behaving as Op states, hence the simple test, once we know the exact problem, we can advise more clearly :-)
Moto
a b ) Power supply
September 23, 2011 4:04:19 PM

It's possible the poor person working 15 hours per day in the Asian sweatshop installed the fan backwards. It's easy to check which direction the air blows.
a c 104 ) Power supply
September 23, 2011 4:18:49 PM

15 hour days? Pfft, part-timers lol
8 hour nightshift, at least four hours Pc related stuff most mornings and Gf and three cats to take care of 15hour day would be a holiday hehe :) 
Seeing as Op still hasn't posted back though, I figure we'll never know,
/whistling wind through sparse trees.....

Moto
September 24, 2011 3:53:23 PM

Okay. Problem solved. When i hold a piece of paper below the fan, inside the case, the paper is drawn up to the PSU - so it's not actually blowing air into the case. :-) .

Not sure why it felt like air was coming out. Thanks for the help guys - and thanks to the efficient AND accurate child laborers at Corsair for installing the fan properly.
a c 104 ) Power supply
September 24, 2011 4:23:46 PM

They have to do it properly, or they are beaten, again.....
:p 
Glad to help clear that up man,
Moto
September 25, 2011 2:43:15 PM

Best answer selected by richardisaac.
!