Foobster Posted September 15, 2009 Share Posted September 15, 2009 Hi! I have a HX520W PSU. When I look at the voltages reported in BIOS I get the following: (approximate min and max recorded during observation) Vcore 1,35 to 1,38 3,3V 3,3 +5V 4,3 to 4,4 +12V 11,6 to 11,8 -12V -10,4 to -10,5 Battery 3 +5V SB 4,9 to 5,0 What I would like to know is whether these values are acceptable and according to specs? I found an answer to a similar question regarding the +12V rail on another PSU, claiming that a deviation by 5% is ok. Does this percentage apply to all PSUs and rails? Some of my voltages are outside of the 5%-interval. Is there a problem with my PSU? Kind regards, Foobster Link to comment Share on other sites More sharing options...
FEAR6655 Posted September 16, 2009 Share Posted September 16, 2009 Test the voltages using a multi meter. Link to comment Share on other sites More sharing options...
Foobster Posted September 16, 2009 Author Share Posted September 16, 2009 Thank you for answering. I will check the voltages manually this weekend. With my previous PSU (in the same system) I had the correct voltages, when checking in BIOS... Furthermore, I still need to know what the acceptable deviations are. Any ideas about that? Is there a technical specification I can read somewhere? Link to comment Share on other sites More sharing options...
FEAR6655 Posted September 16, 2009 Share Posted September 16, 2009 Rails +3.3v, +5v, +5vSB and +12v must all be within 5%. Link to comment Share on other sites More sharing options...
stevieu Posted September 17, 2009 Share Posted September 17, 2009 Post your finds :) I am just waiting for a multimeter to arrive, as I'm getting worryingly low software readings from both my TX550 AND TX750. Even more worrying now, as for the first time since this build, the computer randomly lost power and rebooted. I've just RMAd my GPU, but it could be the power supplies afterall. Major bummer. Link to comment Share on other sites More sharing options...
Foobster Posted September 18, 2009 Author Share Posted September 18, 2009 I followed the instruction on Corsair's site, I.e. unplugged everything shorted the green pin. I found a key to decode the colors of the ATX-connector, and have obtained these results: Orange (3,3v) ==> 3,4v OK! Red (5v) ==> 5,04v OK! Yellow (12v) ==> 10,02v NOT OK! Blue (-12v) ==> -9,37v NOT OK! The results are disappointing. I bought an expensive PSU on purpose, in an attempt to avoid problems like this. I only installed the PSU 7 months ago, so there are a couple of years left on the warranty. Is there something more I should test before asking for a replacement? Link to comment Share on other sites More sharing options...
FEAR6655 Posted September 19, 2009 Share Posted September 19, 2009 The -12v is irrelivant now, it isn't used as all components can now create their own negative bias. Did you test the PSU with a piece of hardware attached? That 12v reading would not even power on a system. Link to comment Share on other sites More sharing options...
Foobster Posted September 19, 2009 Author Share Posted September 19, 2009 I connected a fan, an ODD and a HDD. The voltage reading for yellow (12v) is now 10,01v. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 21, 2009 Corsair Employees Share Posted September 21, 2009 Let's get it replaced, please use the On Line RMA Request Form and we will be happy to replace it. Be sure to check the box that says “I've already spoken to Technical Support and/or RAM Guy.” Link to comment Share on other sites More sharing options...
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