Something/someone has chewed in my MagSafe cable, the one that goes from the actual power supply unit and up to the MacBook Pro, so the cable cannot be replaced (at least not easily, maybe at the Apple Store? I doubt it though). See attached photo. So it's only 18.5V coming out of that cable, but what's the risk involved at this point? If it short circuits, will it break just the power supply? Or possible also my MacBook Pro? Or, will it even be able to short? Will I be okay if I cover it with electrical tape (or duct tape actually, I don't have any electrical tape at the moment), or is it best just to throw it out and buy a new MagSafe power supply? Thanks Edit: I should say that it has probably been like this for a few months, there was a rat in the office a weekend which we caught a few months ago. It chewed in some other cables as well but I didn't notice this one was hit also, until today.