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Old Jan 20, 2010, 04:32 PM   #1
JackAttack
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I just got my Corsair HX850W PSU

I just got my Corsair HX850W PSU and tried to power it up to see the 140mm fan work. Hmmm...nothing. Fan won't power up. Granted, it is not hooked up to a mobo or anything, it's just sitting on the workbench. But the thing acts as if it's dead.
Is this normal? I am guessing the fan sucks air into the unit, cools the internals and then exhausts the hot air out the back of the unit. Maybe the PSU "has" to be hooked up to a mobo to work?
The fan is probably 12v and that's why it doesn't come on...

By the way, I got my CM HAF 932 this morning - what a rig, it's an animal.
Don't forget, beauty is in the eye of the beholder, I love the thing.
UPS damaged the box during shipping, I was worried. But I inspected the case closely and all is perfect.

Last edited by JackAttack; Jan 23, 2010 at 10:20 AM.
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Old Jan 20, 2010, 04:41 PM   #2
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how are you powering it up without a mobo?
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Old Jan 20, 2010, 04:45 PM   #3
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fans have molex connectors that would be my guess in terms of how he tried to power the fans
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Old Jan 20, 2010, 04:49 PM   #4
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The psu has to be plugged into a motherboard to recieve the "power good" signal, or it won't power up. You can short 2 of the mobo connector pins together to do the same thing, don't remember which.
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Old Jan 20, 2010, 04:51 PM   #5
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Quote:
Originally Posted by Bo$$ View Post
how are you powering it up without a mobo?
I mean I just plugged the PSU into the 110v wall socket and turned it on.
I expected to see the fan work, assuming it was a 110v fan.
I have another real old 90 watt PSU that does indeed turn on its fan when powered by 110v., that's what threw me off.

I just called Corsair Tech Support and the told me all is normal, it will not power up unless I hook it to a mobo.
So no worries. I have a 7 YEAR warranty anyhow. Wow, that's nice to know, thats a long time.
Glad I went with this PSU, thanks to the guys here at TPU for pointing me in the direction.
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Old Jan 20, 2010, 04:55 PM   #6
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Quote:
Originally Posted by JackAttack View Post
I just got my Corsair HX850W PSU and tried to power it up to see the 140mm fan work. Hmmm...nothing. Fan won't power up. Granted, it is not hooked up to a mobo or anything, it's just sitting on the workbench. But the thing acts as if it's dead.
Is this normal? I am guessing the fan sucks air into the unit, cools the internals and then exhausts the hot air out the back of the unit. Maybe the PSU "has" to be hooked up to a mobo to work?
The fan is probably 12v and that's why it doesn't come on...

By the way, I got my CM HAF 932 this morning - what a rig, it's an animal.
Don't forget, beauty is in the eye of the beholder, I love the thing.
UPS damaged the box during shipping, I was worried. But I inspected the case closely and all is perfect.
http://i657.photobucket.com/albums/u...erHAF932a3.jpg
You can jump the power supply on by connecting two of the connections on the 24 pin connector. Google search will pull up some things, but should be black and green wire. That should turn on the fan.
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Old Jan 20, 2010, 05:03 PM   #7
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^^ like this:
http://www.youtube.com/watch?v=weroTqTMPl4

Some powersupply's will start the fan when its just plugged into the wall, some need a mobo connection. It's all good. :-]
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Old Jan 20, 2010, 05:03 PM   #8
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Corsiar tech support site gives instructions for using a paper clip to jump start the psu. Check there first as those instructions are from the manufacture.
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Old Jan 20, 2010, 05:04 PM   #9
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Yeah you need to jump it. Great PSU. The POS site wont load again now but over at XS is a thread by chew* about this unit with pics of it driving four 4870X2s + all kinds of other crap without breaking a sweat on the 12V rail.
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Old Jan 20, 2010, 07:14 PM   #10
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Quote:
Originally Posted by JackAttack View Post
I mean I just plugged the PSU into the 110v wall socket and turned it on.
I expected to see the fan work, assuming it was a 110v fan.
I have another real old 90 watt PSU that does indeed turn on its fan when powered by 110v., that's what threw me off.

I just called Corsair Tech Support and the told me all is normal, it will not power up unless I hook it to a mobo.
So no worries. I have a 7 YEAR warranty anyhow. Wow, that's nice to know, thats a long time.
Glad I went with this PSU, thanks to the guys here at TPU for pointing me in the direction.
i thought so quality is usually not DOA
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Old Jan 20, 2010, 07:17 PM   #11
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You don't need to jump anything. Hook it up to your system and power it on.
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Old Jan 20, 2010, 08:54 PM   #12
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You don't need to jump anything. Hook it up to your system and power it on.
Wish I could but I have NO system to hook it up to yet.

This is a total new build. I'm waiting for more "extra" play money to flow into my pocket for a mobo, cpu and such.

I'm in the planning stages right now.

Thinking about the right mobo at the moment.
I have a couple in mind...

Gigabyte X58A-UD7 or Asus P6T

Not sure yet which one I want. Whadda you guys think?

Definately going with an Intel i7 cpu though.
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Old Jan 20, 2010, 09:01 PM   #13
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PSU is probably fin. Take the 24pin mobo connector, and stick a paper clip between any green wire and a black wire. The PSU will fire right up.
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Old Jan 20, 2010, 09:04 PM   #14
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Haha, so the C130 finally landed in your zone eh? I'd go with the Gb one, but that's due to personal preference. I only like asus rog boards, otherwise, they look meh!
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Old Jan 20, 2010, 09:51 PM   #15
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Yea, it landed all right...lol. And it IS big, no doubt, but not as big as I was expecting. It already love it and don't even have parts in it.
So you like the GB one, eh. Well, I am seriously considering it.
It will be a month or so before I spring for it though.
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Old Jan 20, 2010, 09:57 PM   #16
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Well I hope your savings for your new build goes to plan! if I were you, I'd be biting my nails! I'm so impatient, especially with hardware!
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Old Jan 20, 2010, 10:13 PM   #17
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Well I hope your savings for your new build goes to plan! if I were you, I'd be biting my nails! I'm so impatient, especially with hardware!
second that!!!!
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Old Jan 23, 2010, 10:20 AM   #18
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1-22-10 OK, I got the PSU powered up with an old mobo I had laying around...IT WORKS !!!
Now some people may say I've got the PSU installed upside down.
Thats the way I wanted it.
It has a fan on the top of the unit (blow through design-air in on top, exhaust out the back)
I want to suck COOL air into the unit, not warm air from inside the case.
Plus mounting it this way gets the cable harness closer to the mobo tray, for a cleaner look.


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Old Jan 23, 2010, 03:21 PM   #19
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I'll be picking up one of these PSU's to replace my possibly dying Antec 850W. :-]
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Old Jan 23, 2010, 03:27 PM   #20
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I really want a Corsair PSU, but my OCZ has been good to me for over two years.

But I will be going with a Corsair PSU after i get my i7 920 and some RAM. They look to good to pass up.
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Old Jan 23, 2010, 03:34 PM   #21
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Quote:
Originally Posted by JackAttack View Post
1-22-10 OK, I got the PSU powered up with an old mobo I had laying around...IT WORKS !!!
Now some people may say I've got the PSU installed upside down.
Thats the way I wanted it.
It has a fan on the top of the unit (blow through design-air in on top, exhaust out the back)
I want to suck COOL air into the unit, not warm air from inside the case.
Plus mounting it this way gets the cable harness closer to the mobo tray, for a cleaner look.
No.. that's actually the way it's designed to be installed, hence the logo being the right way up
Enjoy it mate. It's one of the most efficient PSUs on the market
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Old Jan 23, 2010, 03:37 PM   #22
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I wish my TX650W didn't randomly die on me, kinda pissed I have to pay expensive shipping to get it repaired though but I replaced it with a HX650W in the end, hopefully this won't break for at least a year.
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Old Jan 23, 2010, 03:41 PM   #23
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I wish my TX650W didn't randomly die on me, kinda pissed I have to pay expensive shipping to get it repaired though but I replaced it with a HX650W in the end, hopefully this won't break for at least a year.
Whoa, I had the same PSU randomly die as well....took the disc drive and the motherboard with it.. xD
Corsair is down the street though, so I took it in and walked out with a new one. Running strong to this day!
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Old Jan 23, 2010, 03:59 PM   #24
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Whoa, I had the same PSU randomly die as well....took the disc drive and the motherboard with it.. xD
Corsair is down the street though, so I took it in and walked out with a new one. Running strong to this day!
Yeah, I have to ship mine to Almere in the Netherlands, will cost me €44 ($62) As solid as the PSU is, it aint light
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