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 Post subject: Blown Fuse = Desktop No Power (Troubleshooting Help Request)
PostPosted: Fri Oct 26, 2012 10:56 am 
8086
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So while at work the other day my upstairs bathroom and kids bedroom lost power. Resetting the breaker didn't fix it so I bought a new breaker and everything came back on....except my desktop. The monitor and surround sound system all power on fine, the desktop itself does nothing when pressing the power button (All 3 things were on the same surge suppressor strip)

Steps I've done so far:
1- Disconnect everything from the case except PSU cord to outlet. Toggele PSU hard switch and try power button, bupkis.
2- Connect PSU cord directly to tested working wall outlet and attempted to power machine, nothing.

I'm going to try more troubleshooting today, but I've never worked an issue like this and I'm looking for some help in narrowing the faulty component down. (PSU, Mobo, component).

The machine is a Cyberpower custom built with:
PSU - XTREMEGEAR 700 WATT POWER SUPPLY
CPU - Intel I5-3570K
Mobo - ASUS P8Z77-V LK Z77 CROSSFIRE/SLI SATA 3.0 USB 3.0 LG
GPU - nVidia GTX 470
RAM - KINGSTON HYPER-X 4 GB DDR3/ 1600 MHZ
HD1 - 128GB OCZ VERTEX 4 SSD (Windows Drive)
HD2 - 1TB Seagate


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Fri Oct 26, 2012 12:27 pm 
Clawhammer
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Eeek! That is a notoriously shit psu. Replace it!

Don't believe me, right. Google around.


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Fri Oct 26, 2012 4:49 pm 
Smithfield
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If you want to confirm the PSU is blown, short pins 21 and 22... I believe. It's the green wire to any of the black ones.


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Fri Oct 26, 2012 5:58 pm 
8086
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what am i looking for by shorting pins?


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Fri Oct 26, 2012 6:15 pm 
Smithfield
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KenFX60 wrote:
what am i looking for by shorting pins?

If the unit powers on. You can plug in something into the other connectors to check if power is being supplied I believe.


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Fri Oct 26, 2012 7:47 pm 
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LatiosXT wrote:
KenFX60 wrote:
what am i looking for by shorting pins?

If the unit powers on. You can plug in something into the other connectors to check if power is being supplied I believe.


ok, I'll give this a shot tomorrow morning and let you know what happens.


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Oct 27, 2012 6:11 am 
8086
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jumped the pins and attempted to power up psu, nothing. no noise like attempting to start, just stayed off. assuming that indicates a dead psu?


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Oct 27, 2012 6:32 am 
Smithfield
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If you doubly checked everything, then yeah, it's dead.


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Oct 27, 2012 6:41 am 
8086
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well, better psu than the motherboard i guess.


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Oct 27, 2012 7:05 am 
Million Club - 20 Plus
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KenFX60 wrote:
well, better psu than the motherboard i guess.


You won't know if anything else is toasted until you replace the psu.
Ask me how I know. :cry:


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Oct 27, 2012 8:38 am 
Willamette
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I agree with dedgar. I would be especially worried about the SSD as they are extremely susceptible to any sort of voltage spikes or sags.


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Oct 27, 2012 10:34 am 
Clawhammer
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The zapping of that psu is a good thing, it is shit. Now go snag yourself a Seasonic X650, a CP1350AVRLCD and you'll be far better off than when you started. Ironic too, a Cyberpower would have saved your Cyberpower!


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Oct 27, 2012 3:24 pm 
8086
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I'm going to pick up a new psu tomorrow and see if that resolves everything. i hope it does, keep everyoneupdated.


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Nov 03, 2012 8:39 am 
8086
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took a while to get to the store. got a OCZ 700w dual rail psu and everything works fine now. thanks for the help everyone.


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Nov 03, 2012 10:54 am 
Clawhammer
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Thanks for the update. Glad you are back up and running. Wish you would have asked, since a single rail is the way to go.


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Nov 03, 2012 11:28 am 
8086
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i thought dual 12v rails was preferred to run SLI?


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Sat Nov 03, 2012 8:31 pm 
Willamette
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While I tend to agree with kleinkenstein (and I do prefer PSUs with a single +12V rail), I happened across this little bit of information that I found to be both interesting and enlightening: http://www.jonnyguru.com/forums/showthread.php?t=3990/


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Mon Nov 05, 2012 10:26 am 
8086
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Good information, helped me correct some misconceptions I had. In either case, I think the PSU I picked up is good and will cover my current config and future SLI upgrade.

New PSU - http://www.ocztechnology.com/ocz-500w-7 ... upply.html


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 Post subject: Re: Blown Fuse = Desktop No Power (Troubleshooting Help Requ
PostPosted: Mon Nov 05, 2012 12:20 pm 
Willamette
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Joined: Thu Aug 12, 2004 9:04 am
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I think you made an excellent choice. It has active PFC and overvoltage protection as well as the power you need to run your rig. Good luck!


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