PSU Problems?

[Aoshi]

Hi all,

I'm currently working on my first build, and am having problems powering up. When the short the power circuit, it turns on for just 1-2 seconds (just enough to give the fans a whirl). Then I hear a click (sounds like its coming from the PSU), and everything goes off. After I turn off the breaker on the PSU, wait five seconds, and turn it back on, the same thing happens again. I'm working in a minimal setup environment with only 1 stick of DDR2 ram, a graphics card, and the CPU w/ heat sink and fan installed, outside the case. Here's my setup I'm testing on:

PSU - Enermax 660w EG851AX-VH
MotherBoard - ASUS M2N32-SLI Deluxe Wireless Edition
CPU/Fan - AMD Athlon 64 FX-62, with stock heatsink and fan
Graphics - XFX nVidia GeForce 7600 GT

Because of the clicking sound before shutting off, I'm thinking that it is something with the PSU. However, I'm wondering; could it be a bad power cable? It sounds like there may be a short and it's causing the PSU to trip. The cable provided is rated at 14awgx3c. All my other cables are 18awgx3c, so I'm not sure if I can safely swap cables to test the idea. Any help would be greatly appreciated.

[Cricket]

Is the motherboard in or out of the case right now?

Do you have another compatible power supply you can swap in to test with?

Cricket

[Aoshi]

The motherboard is out of the case, and is lying on top of the cardboard it came on. I did take apart my other computers (they're cheap pieces of junk), but could not find any compatible power supplies.

[Cricket]

Are you plugging in all necessary power connectors for the motherboard?

Make sure the heatsink is installed properly on the CPU. The system might be turning off because the CPU is heating up too fast and going too high.

Cricket

[Aoshi]

Good news! Last night I ran across faq that explained my problem. I can't remember what site, for the life of me, because I must have visited a hundred in my attempt to find the problem. It turns out that my PSU is EPS 12v 1.6 compliant. According to the faq, PSU's under this standard require more load on the 12v rails to operate than the ATX 12v complaint PSUs. No wonder I wasn't able to get it to power up with my minimal setup.
I hooked up both of my matched memory sticks, both of my SLI graphics cards, the rear fan, and one of my old hard drives (I'm still waiting for my new ones to arrive) and everything worked fine! Yay! Thanks for offering your help, though, and sorry if I wasted your time!