No sound on KD-48A9 - needs full restart

[ccarmock]

Prior to the recent firmware release for the KD-48A9 I had experienced a bug once whereby there was no sound on live TV.   a full Android restart restored sound.  I See this listed as a fix in the latest firmware, which I do have installed.   Yet the no sound problem happened again today. 

I noticed that if I tuned to any HD channel there was no sound, but tuning to an SD channel did produce sound.    Going back to an HD channel again - and no sound.

 Pressing and holding the power button and selecting restart fixed it.

I have logged a ticket with Sony support. 

[Joe_Dohn]

Try clearing the cached data (under Device Preferences - Storage - Internal Shared Storage - Cached data) then restarting with the power button.

[Rich.T]

I have now got this problem. Last thing I watched last night was a UHD programme on IPlayer and noy I dont get any sound from any on demand channels

[Joe_Dohn]

Have you tried clearing the cached data and restarting the TV? Or the basics of unplugging, disconnecting everything, etc.?