It is currently Fri Sep 19, 2014 10:40 am

All times are UTC - 8 hours




Post new topic Reply to topic  [ 5 posts ] 
Author Message
 Post subject: Seasonic X400 problem / question
PostPosted: Mon Feb 14, 2011 10:27 pm 
Offline

Joined: Mon Feb 14, 2011 9:52 pm
Posts: 2
Ok so I finished assembling my second ever PC (and my first for seven years...) and it's got a strange quirk, but first, the PC itself:

Case: Antec P182 Fans: Two Noctua NF-S12B ULNs with the supplied undervolting thingiemagigs. One is the intake on the front drive cage, the other is the exhaust on the back. One Noctua NF-P12 on the CPU Heatsink (Thermalright Venomous X) running full-tilt.
Motherboard: ASUS PH8-67 M-Pro Processor: 2500K
Aforementioned heatsink.

There's an Intel SSD and a blu-ray drive, and that's pretty much it at the moment.

Ok so the problem:
When I press the power switch, the system starts for about two seconds.. stops, then starts again, and behaves normally from then on. The P182 doesn't have any speaker input to connect to the motherboard so I can't hear any POST noises...
What could the problem be?
Is it just a low-power start up thing? Or something more sinister?

Secondly, a question.
My initial plan was to have an undervolted fan in the lower chamber to cool the PSU... But I didn't anticipate the length of the PSU. Stupid, I know. So, I can't easily fit a fan in there. It's possible, but it's super tricky and by that point I was just super frustrated and gave up. Since there's only an SSD in that compartment, the PSU only has to deal with it's own heat, and the system isn't going to draw much power anyway (I mean, rarely above 100w by my estimation), so my question is, should I even bother with the fan? Or is the PSU fine?

Feedback appreciated.
Thanks!!!!


Top
 Profile  
 
 Post subject: Re: Seasonic X400 problem / question
PostPosted: Tue Feb 15, 2011 4:11 am 
Offline

Joined: Wed Feb 04, 2004 2:12 am
Posts: 2831
Location: USA
oversight wrote:
Ok so the problem:
When I press the power switch, the system starts for about two seconds.. stops, then starts again, and behaves normally from then on. The P182 doesn't have any speaker input to connect to the motherboard so I can't hear any POST noises...
What could the problem be?

Could you be a lot more specific on what is happening and why you think there is a problem? How do you know the system stops, then starts again?


Top
 Profile  
 
 Post subject: Re: Seasonic X400 problem / question
PostPosted: Tue Feb 15, 2011 4:39 am 
Offline
Friend of SPCR

Joined: Tue Jul 08, 2008 4:53 am
Posts: 1314
Location: CT
Welcome to SPCR !!

What you describe is exactly what my motherboard (Asus as well) does when I turn the power completly off (with the switch at the back of the PSU, or when I unplug the computer) and then try to boot the system. It starts for a few seconds. Turns off. Starts perfectly normally.
I think I remember reading somewhere it was a clock sync "feature" of certain asus boards (something to do with the clocks synchronizing).

_________________
Main/gamming : Antec Solo|X-650|Asus P5Q-E|Intel Q9550@3.4GHz|HR-01 Plus 120mm Nexus @6V|Corsair 2x2Go XMS2 DHX cas 4 @4-4-4-12|Exhaust Nexus 120mm @9V|Intel X25M G2 160Gb|Samsung 1TB in SQD|2xGigabyte GTS450 OC (@900/1900/3800)|GPU fan 120mm Nexus @6V
HTPC/folder/Storage : Silverstone|E5300 with Samurai-Z|2Go RAM|GTX460@800|2x1To WD EARS|Intel X25M G2 80Go

Fold with SPCR


Top
 Profile  
 
 Post subject: Re: Seasonic X400 problem / question
PostPosted: Tue Feb 15, 2011 5:14 am 
Offline

Joined: Mon Feb 14, 2011 9:52 pm
Posts: 2
Ahh, that makes sense.
Yes, I did flick the switch off each time, seeing as I was adding/removing bits inside.
I can't test it at the moment, mind, but I'm sure you're right.
Duh!

Thanks so much!
And thanks for the welcome too. Long time lurker here.


Top
 Profile  
 
 Post subject: Re: Seasonic X400 problem / question
PostPosted: Tue Feb 15, 2011 6:07 am 
Offline

Joined: Wed Aug 13, 2008 11:45 am
Posts: 523
Location: 128.0.0.1
The PSU is fine. Isn't there even a sticker or something when you unpack that explicitly states that the PSU is responsible for its own cooling?


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 0 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group