Does this PowerMac power supply have replaceable fuse?

I'm servicing a PowerMac that will not start up. I have a similar PowerMac model (Mirror Drive Door Dual 1 GHz) and in past discovered that, in a similar situation, my power supply had blown a fuse. In an earlier search for a solution for THIS model, most common suggestion was "replace power supply." I am looking for a similar power supply fuse to replace, and solve problem, before I ponder replacement of entire power supply. I cannot find any visible fuse inside this power supply. Does anyone have any definite answer about this?