PSU Broke?

[kraben]

Hi i got a Mac Pro 2008 3,1 and one day stops working, wont boot, no video, no usb power, i press the test led and only got stby led Orange and Efi yellow the others are off, i checked a chart and said its trickle power, but the question is its the PSU or something on the board!?

[reddrag0n]

by the sounds of it, your PSU might be hooped. if you have a donor one from an earlier mac pro, that may be useful to plug that one in temporarily to see if your 3,1 will boot