Ulises Posted November 20, 2007 Share Posted November 20, 2007 Good day, I have replaced the graphics card in my PC, being now a Asus 8800GTS 640MB. In order to power this card, I installed a HX520w PSU . The system was OK for a few days, powering off and on the PC everyday, but monday afternoon last week, I could not start the PC anymore. I have measured the voltages with a volt meter, and I got 0 volt in every pin in the ATX connector so I went back to the retailer and I replace the PSU with other HX520. I bought and UPS in order to be sure that the PSU was protected. Everything was fine, but yesterday the new PSU refused to work again. It happened that, while the PC was booting up, a few moments before the windows xp welcome screen appeared, the PC powered off suddenly, and it was not able to power on again. I have measured the voltages ant I got around 4.90V in one pin and 2.8v in other. I have performed the PSU test, shorting the two pins and the PSU did not powered on, but i hear a faint "click" inside the PSU. I have tried to power on with the PSU connected to the UPS or directly to the power outlet in the wall with the same result in both cases I have installed the old PSU ( a "cheap" 400 w PSU) and the old graphics card ( nvdia 6600GT) in my PC and it is working, so I think that the problem could be related with PSU and/or graphics card. Would I try with other PSU or graphics card? I think the HX520W is powerful enough for my rig, but I do not mind to get a more powerful PSU like the HX620W. Thanks for your help. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 20, 2007 Corsair Employees Share Posted November 20, 2007 The hx520w should be fine with your system, I would recommend that you test it on a different system to see if you are having the same issues. The PSU may be tripping the "Over Current Protection" or "Over Voltage Protection" due to an out of spec signal from the motherboard. Cheaper PSUs will not have this protection and the system will seem to be functioning properly until something is damaged. Link to comment Share on other sites More sharing options...
Ulises Posted November 20, 2007 Author Share Posted November 20, 2007 As I said, the PSU is damaged as long it does not power on, so I can not test it in other system. If I perform the PSU test as explained in this forum, I only get a sound like a cricket or kind of a buzz inside the PSU. I will try to get a third PSU and test it for a week or so with the old graphic card in order to isolate the problem. I think there is no choice if I want to use my PC. Thanks Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 21, 2007 Corsair Employees Share Posted November 21, 2007 Let us know how it works out, and if you have any problems replacing it with your reseller, we can replace it for you! Link to comment Share on other sites More sharing options...
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