This problem seems to make all Sony freeview TVs 'not fit for purpose'. You cant watch HD TV without audio dropout.
I bought mine in the local Sony store three months ago - I'll phone them tomorrow and tell them its coming back.
It reminds me of the problem I had with my old Grundig freeview box when the NAT table was increased a year or so ago. Eventually they admitted there was a problem and sent an firmware upgrade.
Why have Sony not sorted it out as a priority?
As a new owner of a 40EX503 for only a week, I'd noticed the dropout issue with BBC HD and discovered this forum after Googling the issue. Good to know it's not just me! However I'm confused by why switching between 1080p and 1080i is necessary within a programme. Perhaps someone could elaborate.
The benefit is meant to be that it's more efficient for an encoder to compress material that was shot as progressive using a progressive encoding mode, as it then doesn't need to worry whether the lines in the two interlaced video fields might or might not come from the same point in time. If it is more efficient, it can either save bandwidth for other channels to use, or allow less severe compression, giving a nicer picture.
TV manufacturers probably never thought that encoders would switch between the two encoding modes dynamically during a programme, which is why these problems are happening - it sounds like Samsung TVs have had even worse problems (black flashes), and other set top boxes as well.
A commercial channel probably wouldn't try an experiment like this without testing it more with real-world TVs, because they'd just lose viewers and therefore money, whereas the beeb is more likely to say that they are following the specs, and make people wait for the manufacturers to deal with it.
I noticed this to be a really bad problem for the first time last night....
Only had the TV for a few weeks KDL40NX713 bought for the HD switchover (mainly for the F1 coverage) a few weeks ago in our area... found loads of forums today with people buying new boxes, aerials etc to try and fix this issue, should the BBC not put up an on screen note regarding this.... people are needlessly spending money etc to fix a problem they dont have..... or rather Sony/Samsung/Toshiba and the BBC have!
Now i find out the F1 coverage this weekend (Saturday) is on guess what........ BBC HD
I think we should complain to the more public side of the BBC rather than the technical R&D side and go to Watchdog programme????
I have now raised this with the BBC Watchdog programme website... after finding 5 or 6 other forums with people complaing about this issue....
The more people complain then it might get fixed one way or another...
Having complained to the BBC, the anodyne response was that this is manufacturers issue.
I have replied asking to know what assessment the BBC have done pre and post the encoding change, pointing out that all Sony TV's on the same firmware will be having this issue.
That must be a lot of TVs!
Hello Sony............are you listening? Any update for us?
Thanks for showing some interest but this thread has been running for a month with no sign of any concrete action - that is disappointing.
BBC have already noted that it's an issue for manufacturers so don't hold your breath at that meeting.
Well, I am really puzzled now
This is a Sony response from early on in this discussion
Maybe you have already been updated by PM, however Sony are aware of this problem and will provide an update via software (hopefully it will not take to long).
In parallel design will check with broadcaster to see what further changes they are planning for other channels and will confirm software is compatible.
Sorry for the inconvenience this is causing, and we will keep you updated on any further information.
Now it seems nothing much is happening until meeting with the BBC next week!
You shouldn't really be that surprised. That's how corporations work.
This problem requires an unplanned firmware re-write to resolve which will require a budget, and hence approval.
As part of this approval commercial will have asked some searching questions and determined in their own minds that this is something that the broadcasters have caused by their actions. Therefore they will have a good try at getting the BBC to reverse this change before being forced into the unplanned expenditure.
I am sure that standards and responsibility to ensure product compatibility during design will not have crossed their minds. This is part of the weakness of non-contractual requirements from standards - there is no commercial lever to resolve emerging problems like this unless there is a direct financial impact on the company (e.g. from reputational damage).
So whilst the initial response from the Engineers may well have been that they were on to it, we can probably forgive them that things are now stalled pending the meeting with the BBC.
The message should be directed to those at Sony who control the budgets and priorities - your brand and its reputation is at stake here. You surely don't want any more grief loaded onto the company than you currently have on your plates at present. Put the effort in to resolving this issue now, and conforming to standards.
The BBC have been quite clear about their position on this issue - please don't waste time trying to move the blame around. This situation could well become more widespread than just the BBC now that encoding technology is improving - you may as well put the effort in now to resolve this problem.