[mythtv-users] Tuner not available - locked?

[mythtv at payne.ch]

While 'experimenting' with Playback & Recording profiles (0.21) last  
night I 'lost' my PVR150 in LiveTV - I got sound but no picture. Since  
then the status shows 'Tuner unavailable' for the PVR150 even after  
MBE restart & system reboot (incl power off), and I can't select it in  
LiveTV

All scheduled recordings on that tuner are now marked as not recordable.

Is there a lock in the DB or elsewhere that can be cleared or is it  
more complicated than I think?

John