ORIGINAL: ChuckAuger
Are you sure it's the motor?? There is not much that can burn up in a brushless motor. Either a winding burned up or the magnets got hot. Check each wire against the other two and see if one is open or shorted (a short might be hard to tell, the windings have a low resistance anyway, but you might see a difference if it's shorted), and the 350 has a definite magnet "bump" to it when you spin it. I'd be more inclined to think the speed controller bought the farm.
I'm not 100% sure about any of it. Everything was working except the motor. It started out ok, but quickly lost power, and it even smelled like it was burned. We picked it up and tried it again, but it finally just quit. It hadn't been run in over an hour, so I don't know how it the magnets could have gotten hot. I'll try it again in a little bit to see if it does anything different. What would cause the winding to burn up? Would the ESC still work on everything else if it burned up? What do you mean check each wire against the other?