Hey Irishguy
Sorry to hear about your troubles..
You can assume right there is a loose connection there, can you possibly take a close up pic of the cable coming out of the hub on both sides?
There may be some stress signs in the cable that show better in a pic?
Only saying this because the cable has about 20cm distance from the controller, supported by machine spring clips, so it would be unlikely to be coming directly from the controller itself
cheers