Hi Paul,
Thanks for getting back to me. I re-started the JB7 this morning. No ill effects, it seems. I re-started the back-up, and it went through the folders and tracks it had already read, and started again where it left off (so doesn't duplicate the back-up).
It has now been working for two hours, but the casing is getting hot again. I may just have to use it for 4-6 hours max, then let it cool down again, until the ambient temperature cools down (as it is due to).
It would help to know what that code message means, and if there are any other codes that might pop up on screen too (and what they mean).
I'll look forward to AudioTech's response.
Thanks,
Leslie