What you are experiencing is unfortunate and it could be several different things. Without more information, I couldn't possibly give you a direct answer. Typically when a computer suddenly shuts off, it's something hardware related. I would recommend you take the computer to a repair center and let them take a closer look at the problem.
You could find a friend who can solder for you, I am not sure how small the pins are on the newer macbook pro's as I am just now getting one and haven't torn into it but the older 15" legacy ones were decent enough to work on if you had some thin solder and a fine tip.