I've had an HX850 for a year now and have been really happy with it so far, except for one small problem.
We have three HD TV stations on the Free-To-Air, and when viewing these, the volume is noticeably lower than on the other normal TV stations. When viewing most channels, the volume settings are normally best at between 18-25, depending on the amount of background noise. With the HD stations we need to push this up to 40-50, and sometimes above, just to get the same sound level. This is a real pain, especially when changing to another channel when you forget you have the sound wound right up!
I have searched online and found that this is an issue that affects the HD volume output of various different TVs. Most discussions about it relating to software updates to rectify the issue, notably the Samsung models. But I can't find any mention of the issue online with regards to the Sony models, and certainly can't find any reference to a software update to fix any such issue. I am running the latest software version according to the Sony support page, or at least there's nothing later than the version I'm running (PKG1.921GAA0002), and when connected the TV tells me no newer software version is available. (Sourced from http://www.sony.com.au/support/download/564523/product/kdl-55hx850
Has anyone else come across this problem, and if so what have you done to rectify it?