Oh man, the saga continues. Tried all the simple things (cycling the key switch, connecting to a charger etc) that I image would force a state change and get any stuck contactors to open / close. No dice. In case anyone is interested you can see a video
here and
here of what was happening.
The morning after this I turned the bike on, after it ran through the init sequence all of the LCD segments started flashing and got nothing from the rest of the bike (
video here). At this point I gave Zero HQ a call and was able to speak to one of the service guys straight away (seriously, awesome support). After a couple of attempts to get a phone line where we could hear each other thanks to the wonderful, modern telecommunications infrastructure of Australia he had a chat to a few of the other guys there and suggested it was likely an issue with the DC-DC converter. Now the bike is obviously not mobile at this point so after asking nicely they emailed a schematic for that section of the system and some instructions to test and confirm the fault. Perfect.
Only problem is whoever last had this bike open was a little overzealous on the Loctite for the seat bolts judging by the amount on the left hand side. After spending Friday evening trying myself and this morning at the local bike mechanic (within pushing distance) I now have a completely burred right hand side bolt and no way to extract short of drilling it out and re-tapping or replacing the support bar that the seat uses to mount to the frame. At this point I've admitted defeat and organised for towing the the dealer next week. It's still within the factory warranty period so the issue can be sorted a little easier and will also be simpler to organise any replacement parts for bits that need to be sacrificed to get the f*#cking seat off.
What I'm really hoping is that if anything has been left active, it's not going to cause a deep discharge of the batteries...
@peter, sounds pretty similar to the issue you had with the 2012XU. Also, in regards to the previous owner, the bike was purchased from a car dealer where the owner had traded it so unsure of history of the issue. When tested ridden and inspected it worked as expected but it may well have faulted previously and triggered the trade in. A little google fu was able to identify the original owner and he appears to be the type that would opt to just guy by a new vehicle rather than taking the old one to a mechanic. The dealer did provided a 3 month warranty and it's still within the factory warranty as well so not overly concerned about the ability to get it resolved. Just a bit of an annoyance as it's a beautiful weekend down here and I want to ride my 2 wheel space ship.