There are no user-replaceable fuses in your Antec power supply (PSU). We don't put fuses in our power supplies because the designs are more advanced than that. Anything that goes wrong that a user could fix with a fuse can be handled by the power supply without any tinkering. Antec builds in a variety of industrial-grade safety circuitry to protect your computer: Over Voltage Protection (OVP), Short Circuit Protection (SCP), and Over Current Protection (OCP). Sometimes the PSU will ?latch? into a protected state. This means that you will need to turn off the PSU and clear the fault before it will function again. You gotta admit that's smarter than a fuse.
Once something goes far enough wrong that our protective circuits can't handle it, the power circuits are designed to take the hit while protecting downstream components from damage. This is born out by the report that all is back up and running smoothly. The next step is to get the PSU replaced under warranty. Open a support ticket at
http://www.antec.com/usa/support_online.html
and be sure to include the model, serial number, your name, shipping address, phone, and email. You should get a RMA # on the business day after you submit the ticket.
Sorry it happened and we'll try to get it taken care of for you as quickly as we can.