Anything to do with a MacBook Air with bad logic board?

I've got a MacBook Air that's approximately 2012 or so (13" model). It suddenly won't turn on (no signs of life at all) and a local "fixit" guy examined it and says it's the logic board. He claims $600 for a new logic board but Ebay says about that much for a whole working MacBook Air, so I'm not sure there's any point in this. Question: is there anything useful that can be done with an Air with a bad logic board - seems like a shame to throw out such a nice machine (screen, disk, etc.) but I can't think of what to do with it. Are the parts usable, or some easier way to fix? What could have happened to the logic board?