Jenny,
Great find. I wonder if jgrason will see the same failure if he removes the side cover.
I remember seeing photos of the Q450 insides around the controller, but can't find them now.
I tied looking back at the old site thinking that is where I saw them, but it has crashed.
Does the cable have connectors at both ends, or is it soldered at one end?
Any chance of a photo of the cable, connector(s), and where it is chafing?