The batteries were corroded so I replaced them but even after doing that the unit still would not function. You can see the heavy corrosion up around the top of the unit on the rear side, in the photograph that accompanies this post.
I haven't had cause to use the recorder for many years. Looking after mum on the Coast I stopped pitching to magazines in mid-2012 so the need for a digital voice recorder dwindled immeasurably after that decision was taken. It's really not surprising - although it is sad - that the unit broke from neglect. It was stored in a hard plastic case which was a bit dirty, so I can only assume that what did for it was lack of use in the sweaty conditions that you find in Queensland.
If I decide to do some recording up at Myall Creek this year it'll have to be using my smartphone. I can buy a new digital voice recorder online but there's not enough time, I think, for the order to be processed and the unit delivered before I'll have to set out for Inverell early on Saturday morning.