OK, so here's the story. Everything was fine on my rig until I started trying to add a fan controller (i7 920, EVGA x58 SLI, GTX 285, 6 SATA drives, Corsair 750TX).
The first was a sunbeam, 20w per channel, which I had plugged into 4 fans, all under .4 amps a piece. The thing started smoking. The issue may have been that I had one channel plugged into the 2 pin controller port on a Thermaltake fan, while the fan was being powered directly from a molex 4 pin. I don't think it liked that, though it shouldn't have been a problem.
So I RMA'd and got a second sunbeam, which for some reason wouldn't take the fans to full RPM.
So then I got a Lamptron FC2 (45w per channel). I just plugged everything in, and started her up. She turned on for a split second, then off. I also smelled some slight burning - similar to what I smelled when the first sunbeam started smoking.
So I unplugged everything. I then made sure that the cable from the power supply that was going to the controller was powering anything else (I had to switch around some stuff). I then tried plugging in the controller with NO fans attached. Nothing - wouldn't turn on.
I then unplugged the controller, and plugged the fans in directly. Still wouldn't turn on, until I unplugged the power cord from the PSU, waited a few seconds, and then plugged it back in. Then it was OK.
The PS is a Corsair 750TX, btw.
Any thoughts? Have I done something bad to the PS? Does it not have enough juice? Or is it reacting to the controllers in some strange way?