Ok so i bought a new set of Klipsch 5.1 Promedia computer speakers in november of 02 with a 4 year extended warranty. Fast forward to december of 06. The center speaker starts giving a low occasionally bumping sound. Then suddenly all the satellites only gives out suddenly when any sound is played. The amp is built into the subwoofer. I am assuming something on the amp is blown. Anybody have a copy of teh service manual for this. Or know what i should check on the board of this. Would i just be better off buying a new set and not waste my time repairing this set. I am lost without my speakers right now and am trying to figure out my best course of action.