Well, as for Toro making poor timers, I agree...but as for the advice given to the poor guy...don't agree. Never even addressed his problem dude!
If he is still watching this forum, which probably he isn't I'll try and help:
the reason the fuse pops is generally a bad solenoid or direct short in the wiring from timer to valves. The fact that zone 1 doesn't work, leads me to believe a possible wiring problem exists.....I think that because he says that the other zones cause the fuse to pop.
I would start by using my voltmeter to check the ohms on solenoids 1 - 4 from the timer. But...as a DIYer, you may not be able to do that.....let us know if you're still watching so we can help you if necessary.
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