It could well be, see here for the Duo Dock "click of death" and route of repair:

http://www.sci.ccny.cuny.edu/%7Ecleary/computers/duo.html

... if you're new to soldering, I'd practice on other old PC parts first. Replacing a capacitor such as this shouldn't be too difficult for a novice, it will help if you have a "solder sucker" and something to poke a hole in the PCB while heating the solder (I have a wooden-handled stick with a long wire glued into one end) to ensure the new capacitor slides in properly.

JB