So this week, my K2 has destroyed 2 x Sandisk Ultra 256gb cards. When I say destroyed, I mean they are dead - no longer recognised by any device, nor by any disk recovery utility.
That was bad enough, but now my control unit is totally dead. There is permanent and switched 5v power, I have checked with multimeter so that's not the issue.
I've tried every combination of button press I can think of, using power / reset switch etc.
I've tried this with cameras plugged and unplugged.
I've plugged the unit into my PC via the USB port to see if any response.