Google's my friend :-) I agree with AlexH, he's just trying to fob you off. It doens't matter who you tell, your rights aren't affected. Mind you, it's probably courteous to try and sort it out with someone in private before telling the world about it, because at the end of the day, it could well have been working when he shipped it. But if you want to claim for it, you're no less entitled to do so just because you posted it on a forum.
Personally, if I sold something as working and it was DOA, I'd expect a chargeback; however, I'd also expect to get the broken item back because there's a change I might get it repaired, rather than the buyer just keeping his money and my item. But hey, that's not the real world any more, is it? *sigh*
