Solved ATX PS turns off when blue(-12V) and red(+5) get loaded Tags: Power Supplies Cameras ATX Power Components Last response: December 3, 2009 6:21 PM in Components Share vivalibre December 3, 2009 3:29:26 PM Hi there, I am using an extra ATX power supply to power some surveillance cameras that need about 17V to run. My problem is that the power supply turns off when I try to power the cameras. I created two rails to power the cameras, one connected to the ATX blue wire (-12V) and the other to red (+5V). A multimeter shows 16V between the two rails -- good. I also tied the green wire to ground so that the power supply will turn on. As soon as I connect even one camera, though, the fan stops on the power supply, and I get no more voltage. I tried connecting a smaller "wall-wart" 17VDC power supply to my rails, and that works fine. So why is my ATX power supply turning off?? -Andrew More about : atx turns blue 12v red loaded Best solution jsc a c 144 ) Power supply December 3, 2009 4:35:22 PM Because the -12 volt line generally produces no more than 1 amp. You are overloading it. Share vivalibre December 3, 2009 6:21:41 PM JSC, I think you're right. I found that the cameras will run okay with just 12V, so using yellow (+12V) and black (0V ground) works too, and that doesn't cause the PS to shut off. Thanks! m 0 l Can't find your answer ? Ask ! Publish Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !