Actually, just tried again, and when I turned it on it beeped "card found" then "card locked". Is that normal? (don't usually look at it)
EDIT: just found this from Nebbs in a thread discussing this (good old search engine)
"It's almost certainly the little sensor that detects the position of the card slider. That sensor is buried deep within your GT-31, you'll have to pull it to bits to get to it. Good luck "
That sucks.
EDIT: or does it? My wife suggested I pull the card out and blow into the card slot. Ha, what are the chances that would work?
It worked.



Normality has resumed.
EDIT: well... worked once - did a lap of the house and the track was there. Put the card back in to try and write today's session to it, and back to the "card locked" message. Tried a few dozen times, same message.
sigh, tomorrow's problem now.