gonzalezbr Posted November 18, 2010 Share Posted November 18, 2010 Hey guys! I was building myself this new comp (specs in profile) and came across a problem I'm not sure to how to solve. While I was building the computer, I forgot to plug in the EPS plug. Tried to power up, and then the fans would just spin for like half a second and then stop. Then I reviewed everything, and realized I had forgotten the 12v EPS. Plugged it in, tried to boot, and now the fans(psu,cpu) wouldn't even start working. Unplugged everything, left only mobo+cpu+psu connected. Still, can't get to power up. I don't have internet at home now (I sold my old pc to build the new one) and I'm on a friends house now. I have a multimeter, so my first attempt was to try to measure the voltages. When I tried to power up, I saw the 12v go up a little and then back to 0v. While I was doing that, I realized something: the connectors on my MB and my PSU are different. My MB connector is like this: http://www.playtool.com/pages/psuconnectors/eps.jpg Watch closely, the connector is like this: SCCS CSSC (Latch) S = square pin, C = cut pin (the "housy" thing) However, my PSU connector is like this http://www.playtool.com/pages/psuconnectors/eps4plus4.jpg CCCS CCSC (Latch) As you can see, they don't seem to match perfectly, even though the cut pins can go in the square MB pins. Is this ok? I was also thinking of testing my PSU, and I found this site: http://pcsupport.about.com/od/toolsofthetrade/ht/power-supply-test-multimeter.htm Is this safe to do? I need some help, I've just got no real idea where is the problem coming from... EDIT: saw this: http://forum.corsair.com/v3/showthread.php?t=63991. Sounds like the procedure is safe. I'm going to test it up today. If this isn't the issue though, what could it be? All components are brand new... Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 18, 2010 Corsair Employees Share Posted November 18, 2010 Don't worry about the shape of the pins, the connector will still only plug into the board in one direction, thats normal. Try this test to see if the PSU is responding properly to the power on signal. To check the voltages the guide you linked looks good, but if the PSU is not staying in the test that I linked above, then we would want to replace the PSU for you. Link to comment Share on other sites More sharing options...
gonzalezbr Posted November 19, 2010 Author Share Posted November 19, 2010 Okay... did the paper clip test. Fan spinned, everything seemed ok. Yet, when I press the power button, the led in the motherboard goes dim (about ~50% brightness), and does not come back. When I try to power up, the fan starts to spin, and when I press and hold the power button (force power off) the fan stops spinning. What should be the problem? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 19, 2010 Corsair Employees Share Posted November 19, 2010 The only way to know for sure would be to test the PSU in a different system and see if you get the same results. This should either isolate the PSU as the problem, or tell you that there could be something wrong with another component in the system. Link to comment Share on other sites More sharing options...
gonzalezbr Posted November 20, 2010 Author Share Posted November 20, 2010 Going to test the PSU on another system. However, I put some fan loads on the PSU and it seems to be working fine. I don't think the problem is with the PSU. Thanks for the excellent and great help! I will probably keep buying Corsair products. This was the first time somebody from tech support did not treat me as an idiot and seemed really interested in solving my problem. Also, real fast answers. Thanks and keep up the good work! (I think you can lock this thread now. Thanks again) Link to comment Share on other sites More sharing options...
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