As per subject - our Bravia TV (KDL-46W4000, 4 weeks old) performed an over-the-air firmware update on the 8th October, just as Sony said it would, but as a result seems to have lost all audio from the digital channels.
The TV was (and still is) configured to send audio to an external amp (using the 2ch phono outs).
Changing the TV audio system setting to "TV Speaker" makes no difference - still no audio on any digital channel. Audio for analog reception is still working normally whether using TV Speakers or Audio System settings. So it's not the amp or the connections.
The "Audio" option on the remote has no effect and the Audio settings in the info display indicate English.
Has anybody else had this problem?
Is it some obscure new setting in the new firmware that is in some unhelpful initial state following the update?
Or is the firmware a dud?