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Blown fuse more than likely bad solenoid....

Find zone 6...replace solenoid...test.

I would agree, Most likely a bad solenoid.

look for green valve box covers

Hi Mac. Yep it's either the solenoid or crossed wires. First of all have a few fuses on hand. Make sure they're the same size that came with the controller. Don't put a bigger fuse in there or you'll fry your controller.
I would open the timer to see what color wire is connected to the number 6 station. I'd disconnect the wire and turn on station 6. If it doesn't blow the fuse then you've eliminated the timer itself as the problem. Hook the wire back up. See if you can find the valve with the same color wire. Disconnect the wire from the solenoid on that valve. Go back to the clock and see if it blows the fuse when you turn on #6. If it doesn't blow the fuse then it's the solenoid. If it's still blowing the fuse with the wire disconnected from the solenoid then the ground and hot wires are touching each other somewhere along the line. Look for bare wires. Many times they'll be at the valves themselves. Maybe there's a splice somewhere along the line. Did you do any digging where the wire may have been hit with the shovel? If you can't find the valves you'll have to call a pro. Good luck!

do as sprinklerguy mentioned

It will depend what controller you get. Most of the major name brands (rain-Bird, Hunter, ETC...) have internal circuit breakers. They will protect the controller from being damaged if there is a short.

Just in case...leave zone 6 wire disconnected from timer until you isolate the solenoid and replace it.