Bottom lock problem after update

[ginodan]

So recently updated my tzt2 to 6.21 which seemed to go smoothly but when I used the sounder today my bottom lock screen kept blanking out intermittently no issues prior, BZ/HF works perfectly as does HF full screen so Iam at a loss it did my head in watching it play up all day , any ideas ??

 

[Snips]

Ginodan,
Interesting, make sure that the Bottom Level is still set to -20.

Snips