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Faulty Or Weak Psu?


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i'm trying to run this from my older antec neopower 480w psu, but it won't even post.

the cpu fan spins slowly and not everytime as well as the one other 120 case fan connected (slows down, stops, speeds up etc.), but the pc does not post and shuts itself down.

 

specs:

 

gigabyte ga-p965-ds3

core 2 duo e6400

2gb ocz gold gamer xtc pc6400

evga 7600gt ko

antec neopower 480w

sb audigy

(no hdd, dvd yet)

one 120 case fan

 

when sound card is out, and one stick of memory only , it posts fine, but the cpu fan still doesn't work, or spins a bit and stops later etc.

 

is that a faulty psu? i can't believe it wouldn't have enough power for this.

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my neopower 480 won't even start up my 3500/neo2/9800pro rig... like it doesn't even TRY to start up... i trick started the psu and tested each pin and the right voltage is coming out of all the pins... it just won't start the rig up... my Tt Purepower 480 starts it up fine and it runs at stock speed without a hitch, but if i try and oc it more than about 212 MHz it just ends up failing prime... so the Tt psu is junk for ocing that rig... i really wish the Neopower could run it, but it's looking like a no

 

basically, i think the Neopower is a p.o.s.

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man, this is unbelievable...

 

i spent some $ for that pos a while back hoping that it will get me through at least one more upgrade.

 

oh well, it might as well be time to look for a new one...

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I almost bought a Neopower 480 over the Enermax Liberty, glad I didn't now. Not terribly up-to-date on the best PSU right now, OCZ seems to have a hit with their new GXS 700w. That one seems to do everything you need from a PSU.

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But I find that kind of wierd because the Core 2 Duo has low power consumption. How would the PSU have trouble powering your stuff?

Well, thats the reason I'm made this thread, because it seems to me it should be perfectly fine. Before it was powering a Dothan rig which has less power consumption, but this is not working with not even finished basic system. (no crossfire, sli, raid arrays etc.)

 

Can't even swap out for another one, since the spare one I have is an Antec SmartPower 380w which did not even power up my previous rig.

 

Should't be a problem with mobo though. right?

 

In case I need to grab a new one I was looking at the SilverStone ST60F 600W , OCZ 700W GameXStream or Enermax Liberty Modular Power Supply, 620W

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my neo480 he starts up my pc beautifuly. . .

good for you, mine apparently doesn't. I guess I will stay away from Antec's for now.

 

that Ocz GameXStream should be a rebadged Fortron Epsilon FX600-GLN.

 

 

Edit:

Just took it out and powered with it: AthlonXP 2000+, Asus A7N8X, 512RAM (2 sticks) Radeon LE, DVD, HDD, modem and measured voltages with a DMM.

 

idle in xp:

on molex it reads 5.06V

on a spare P4 connector 12.26V

 

load ([email protected] & p95) after 1 hour, will continue testing...

on molex it reads 5.07V

on a spare P4 connector 12.24V

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for the record... my neopower USED to give me my amazing oc's on both my neo2 and ultra-d... maybe it will still work on the ultra-d and is a glitch with the combination of neo2 and neopower (even though they worked fine in the past)...

 

maybe i just asked too much of the psu and it became lame... maybe it's because it has 15A on one of the 12V rails... who knows... anyway, as you mentioned, i feel the same... i don't think i'll be buying an antec psu anytime soon...

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I just risked it and bought OCZ GameXStream 600W and the result is EXACTLY SAME problem. So therefore I'm condluding it's something screwed up with the mobo and it's apparently not distributing power properly to other components. Tomorrow morning I will try to get a replacement and hopefully return that ocz. Wish me luck :D

 

Even with the Ocz, I can only post with one stick of ram at a time, and cpu fan does not even spin, vga and psu fans spin, but they speed up and slow down and eventually die.

 

When I power up, it is like it doesn't want to start, but than painfully starts. (the fan spins slowly, then faster, than slower and then finally full speed) This When I measured voltages with DMM on Antec on this rig it slowly climbes from about 2.3V to 5V on molex as those fans are struggling to power up. Exact same with Ocz. Don't want to try messing with this anymore like it is now, as it cannot be good for other components.

 

I tried all combinations of ram positions, measured voltages, currently everything is outside the case, trying to post with just mobo, cpu, 1 stick of ram and video card.

 

I'm lost now... :unsure::O

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Have you taken all peripherals out other than the necessities?

 

Take your motherboard out of your case and 'yellow-book' it. Chances are, you 'noobed' it somewhere(shorts happen to the best of us. not me, though. :P ) . Start the pc using a jumper from the back of the optical drive that you aren't connecting. If possible, use the stock HSF, and power the fan through the motherboard. Do not use any fan controller that you may or may not have. Tell me if this works, I will continue to help you through this process as time progresses. (Have to leave work now.. )

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