Hi, My Mac Pro stopped working the other day, so I have checked the leads etc so it seems to be a blown power supply. I watched a video on youtube of some guy jump testing a powermac PSU with a piece of wire. Is there a simillar method with the 2006 980W power supply? It has four seperate sets of pins so it obviously connects to different locations on the logic board. This leads me to believe it could be tricky! I dont have a multimeter to check for voltage so I am hoping this is possible as I dont want to pay for a new power supply when this might not even be the problem. I have removed the current PSU and the serial number on it is:614-0383. Any help is greatly appreciated as I cant afford to pay for the repair aswell as a new PSU. I need to get my music studio back up and running ASAP!