Yesterday, they called to tell me that it's also the logic board. And it'll be a $755 flat rate to fix it.
This makes me sad. I can't really see spending that much to fix a 3 year old computer, either, which also makes me sad.
But it still works fine as a very portable machine as long as I keep it plugged in, which makes me happy(ier). Though, obviously, I suppose the logic board itself could fail at any time. I'm kind of inclined to stick with this for the time being, with frequent backups, 'cause I don't really feel like spending gobs of money either to repair or replace it.
*sigh* Stupid computers.