I'm really bummed out right now, I just got home from classes and my speakers don't seem to be working. I have a set of Klipsch Promedia 4.1, that I bought second hand and they have worked fine, until now. I'm not really sure what happened, but I think it is something to do with a power surge that recently happened in my apartment complex.  I opened up the sub and I am looking around for any Obvious signs of burning or frying and something of the like. But I cannot see any signs of those basic problems. Maybe a little AV help from the masters. 

 Let me know if there is anything I can do to get my problem across easier (pictures) or a better description.