cd deck output repairs

I have a 2000 model Panasonic cd head unit, the one that lights up neon blue, with the little tweeter thats built on to the stereo, im not sure about the model number. But the problem im having is no sound comes out of the back speakerwires anymore.  someone told me it needs new outputs, everbody wants to charge outrageous prices. What do the outputs look like and located and where can i get parts from? Radio shack?