Haha - no, I just went in and talked to them. I'm not sure if they only replace for certain reasons...the first one I returned had caught on fire and literally had scorch marks on it, so I had no problems replacing that one. The second one had stopped charging well and shortly before it stopped charging at all, I swear I saw it starting to smoke. So generally, I've just gone in and said, "I'm worried my power adapter is going to explode and kill me. Can I have a new one?"