Please register or login. There are 0 registered and 1052 anonymous users currently online. Current bandwidth usage: 326.30 kbit/s December 15 - 02:55pm EST 
Hardware Analysis
      
Forums Product Prices
  Contents 
 
 

  Latest Topics 
 

More >>
 

    
 
 

  You Are Here: 
 
/ Forums / Power Supply Units /
 

  POWER SUPPLY CLICKS ONCE AND TURNS NOTHING ON. 
 
 Author 
 Date Written 
 Tools 
Taylor Shulman Aug 09, 2013, 01:57am EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List Replies: 1 - Views: 2831
So, I had just got a new power supply for my self built computer. (the computer is about two months old.) I got this new power supply so I could have enough power for two of my video cards. (both are XFX 7950s.) the PSU is a Toughpower Grand 850w by Thermaltake. My old power supply worked completely fine with what I had in my computer. When I plugged in both power supplies into the new one, however, it did not turn on my computer. The only power that I saw present was the little light showing next to the Ethernet port to show internet connection. When I hit the power button on my computer the power supply makes one click noise and nothing happens. No fans or anything. Just that little light. Everything is plugged in correctly. (I triple checked). And I did the paper clip test on my power supply. The fan did come on. I tried unplugging one of the video cards from the new power supply (to see if it would work in the same conditions as my old one) and it still made that one click noise and nothing turned on. This power supply is completely new and the parts in my computer are younger than three months old. I'm not sure if there is an internal problem. Any help is appreciated.
Thanks.


Want to enjoy fewer advertisements and more features? Click here to become a Hardware Analysis registered user.
john albrich Aug 10, 2013, 05:04am EDT Reply - Quote - Report Abuse
Private Message - Add to Buddy List  
>> Re: POWER SUPPLY CLICKS ONCE AND TURNS NOTHING ON.
.
Search for similar threads in the HWA search bar (upper right corner) using keywords
[ system debug ].

In very general terms...the gist is to start with minimum configuration (e.g. mobo+CPU+PSU+1 RAMmodule) and work your way up if the PSU "click" failure does NOT appear with that minimum config.

If it did still fail, one starts on that minimum configuration by looking more closely for things your earlier (assumed) inspections might not have found:
shorts,
mis-wired connectors (manufacturers DO make mistakes),
parts and connectors mis-installed (e.g. forced into place, or offset, or reversed, or etc),
obvious physical and electrical damage, etc.
Even try with the mobo and other components removed from the case (and placed on an appropriate ESD reducing environment) to eliminate metal case/stand-off shorts not visible with things installed.

Also trying to use other "known-good" computers to test suspect components and eliminate them as possible problems, etc. (there are risks there...also discussed in the debug threads). A process called "Easter-egging" may prove useful as well, but depends to which resources you have access.

The threads also discuss using a cheap go/no-go tester, voltmeters, and even oscilloscopes to determine if the PSU is the cause. These "quickie" tests can't PROVE the PSU is working 100% correctly under all conditions, but they can quickly show if there is a major PSU problem (e.g. steady-state over/under-voltage, bad power-good signal timing, etc).

And of course, always follow appropriate electrical personal safety and ensure system safety by following AC power removal, component power-sequencing and hot-plugging restrictions, and ESD handling protocols at all times...not just when it's convenient.


Write a Reply >>


 

    
 
 

  Topic Tools 
 
RSS UpdatesRSS Updates
 

  Related Articles 
 
 

  Newsletter 
 
A weekly newsletter featuring an editorial and a roundup of the latest articles, news and other interesting topics.

Please enter your email address below and click Subscribe.