OK, I think it may be finally dead.
I extracted the files to a card and inserted it into the powered off unit and turned it on. It showed "LOADING" and flashed the screen, then after a few moments went to "Software Missing". It stayed there for a number of minutes, so I turned it off. It will not power on again. I have not tried with a clean external power source yet.

I pulled the card and zipped the contents ([Only registered and activated users can see links. ]). The log file seems to be truncated and 127.bup was not created.

Any further steps? Or am I dead in the water?

Thanks for the assist.