Sony HXR-NX80 (PXW-Z90) camcorder audio fault (XLR handle white noise)

Quick video describing a fault that developed on the XLR audio handle of my Sony HXR NX80 camcorder, resulting in a white noise on both channels when anything was plugged into channel 1 (even just an XLR connector with no mic!) with phantom power turned on.
Now fixed by Sony under the two year Prime Support warranty.