I guess I didn't make clear the fact that this was actually ON the battery packs negative lead. I'm starting to wonder if it's not some kind of fuse, actually, as I'm starting to think the reciever may actually be OK - it got hot enought to melt the foam, but one of the engines seems to be shorting out the works and the other works fine w/o heating up anything. Granted, it's been crashed many multiple times, once even in the water, so I shouldn't be surprised, but I am always painfully aware I know just enough about electronics to be dangerous. A smart man would have chucked the thing and bought a new one, but I just love to test and tinker. No wonder I like this hobby!