i'm with philojet on this one---you're buying a pig in a poke; you don't really know what's wrong with it. the only thing you're certain of is you'll need to spend a hundred bucks (on top of the $75 for the broken unit) to find out if it's even worth fixing. now, if it was a krell or a meridian, i'd take a flyer, but nads are journeyman units and often unreliable ones, so what's your real upside? if you can't find a working nad at your price, i often see rega, cambridge audio and arcam integrateds listed in the $200-300 range; i think you'll be happier looking at something like those.