adventures in soldering

When my megaworks 210d speaker system stopped working months ago, I put off getting it fixed until a couple days ago. However, when Cambridge Soundworks told me I was out of warranty and I'd have to send it in to get it fixed. I decided I'd try to fix it myself mainly for kicks but the monetary cost of sending it in told me I'd be better off getting a new speaker system.

After taking out some screws to assess the damage, I noticed a burn mark on the insulation. With a little reverse engineering, I figured out what was wrong and needed to make a trip to radio shack and break out the fiberglasssoldering iron.
I needed to get a new capacitor as the picture illustrates a blown apart capacitor. Understandably as this system outputs a total 270 watts. 210 watts go to the 8 inch bass cube alone. Something was bound to blow other than the 2,5 w fuse.
Armed with a soldering iron and a new capacitor, I figured I could get the job done. My determination proved to be a lost cause. When I plugged it back in and flipped the power switch, I got nothing. Something else has to be wrong but I can't figure out what. Its hit or miss with electronics for me. Sometimes I can get it back working, but most of the time, they usually become very big paper weights. I'll give it another attempt later, but the outlook is grim.