Help needed. 440 trouble

[Axel]

Maybe it was a complete power-down and re-start that sorted it out?  (Rather than re-loading the firmware.)  Anyway, glad it's fixed without too much bother.

I'd already tried powering down (unplugging) the amps. Tried every trick in the book, but only re-loading the firmware (I actually went down to 10.0.2, then back up to 10.0.5) did the trick.

Hmm, I was afraid you might say that.  Let's hope it's a one-off.

Yeah, lets put it down to a glitch.
I have another problem which I'll post under a new heading.