It most likely is indeed a hardware issue, but it's impossible to say where or what has broken inside and whether or not you can fix it. There is a dis-assembly guide complete with pictures here on ABI that will assist you in taking it apart, but unless you have some electronic testing equipment and know how to use it, you're probably not going to A.) know what to look for, and B.) fix it if you're lucky enough to find the problem.
Better to chalk this up to experience and don't be such a "butter-fingers" with the next one.