how can i fix the jack on my logutech thx sound system?

Well on my system there is a short in the jack on my system. They don't make this model no more cause its all connected with wires and all there new models are wirless. Cost me a prety penny back then and I realy want to fix it so the problem is with the jacks both shorted and I have to fiddle with the jack till I get it working so any help would be nice thanks