I've got a dead 276 also, which I figured was really dead after my attempted fix. It sounds like I should be able to get in on this deal - do you have the info of where to send it and whatnot? A link to Garmin's site explaining how to do it?
Edit: Nevermind, found with help from Google. Easy-peasy: http://www8.garmin.com/support/outofwarranty.html