Rex
Dignified but Approachable
Do you have sound when you're using the tuner?I'm getting a lock up where I'm using the large screen display and I turn on the tuner.
If I press a preset button instead of tapping the tuner button to turn it off, I lose all sound and have to turn the unit off to get it back.
Try tapping that tuner button again, and see if you don't get your sound back.