Help! 98 Blazer Door Lock Problems??

I Have A 98 Blazer S-10 With Power Door Locks. Yesterday My Door Lock Quit Working. It Acts Like It Trying To Work But It Want Lock Or Unlock. I Didn't Have This Problem Til Yesterday After It Rain. It Doesn't Feel Like Anything Is Wet. The Fuse Inside Its Blown. When I Take The Fuse Out And Put It Back In Place It Has Fire.
Can Anybody Help Me With This Problem.

the same thing just happened to my 97 4 door blazer with factory keyless entry. when i press the lock button (in the car), only the driver door tries to lock (it moves to lock for a second then returns to its starting position) all other lock motors do nothing. if i hold the lock button for 2 to 3 seconds it moves to lock and stays there when i release the switch. it does exactly the same thing for unlock, but odviously the results are reversed to unlock. it works the same from the passanger door switch. the key fob has similar results. the rear hatch is fine. when i press any button on the key fob i hear the relays in the receiver working, so i do not think it is a keyless problem, but an actual door lock problem. i just started looking at it. all other electric function work properly. there are two relays working under the dash. one is inside the remote module and the other is below the glove box. i do not have a wiring diagram (yet). if anyone can send a link with a good lock schematic, it would be much appreciated. [email protected]
i am good with wires, that is what i do for a living