Bravia 9 dolby vision issue

[Joeveitch1]

Hi all,

Picked up an 85" bravia 9 a few weeks back, also picked up a Panasonic ub820 blu ray player all was working great with Dolby vision. Sent the player back and bought a new one that was region unlocked and when i have set it up Dolby Vision just no longer works. Ive enabked it in the player etc.  I've tried resetting tv and player, made sure the hdmi is set to advanced and loads of other troubleshooting i found online, the seller of the player also took me through lots of troubleshooting.  I also tested on a slightly older Sony tv which didnt work either. I plugged my xbox series x into both tvs and both have working dolby vision coming through(gaming not movies). I have been using 2.1 hdmi leads and have tried 2 different leads that i know work. Sent the player back to the company who sold it, they have plugged it into their display panasonic and DV works fine. The seller have suggested a recent sony update may be causing the issue but im stumped. Any ideas? 

[daveyh64]

Below is a link to the software update, check and see if your TV has updated to this version

in Settings> Help & Feedback> Help.

Your TVs path maybe slightly different

The software was released on the 19th February.

https://www.sony.co.uk/electronics/support/lcd-tvs-android-bravia-9-xr90-/k-75xr90/software/00343161

Make sure you click on View All Applicable Models to see your TV.

So far no one else is reporting issues with Dolby Vision after the update.

On your Bravia 9 in the Settings for HDMI Signal Input are there certain HDMI ports that are used for Dolby Vision. On my older XR-42A90K there are two HDMI ports of the four available which can be set for Dolby Vision content. If so are you sure you were using those ports when trying to watch DV content from the Blu Ray player.

Try downloading some DV samples and put them on a USB stick and see if they display correctly.

https://www.demolandia.net/4k-video-test/dolby-vision/page-2.html

When watching Dolby Vision content the TV should automatically 

change the Picture Mode setting to Dolby Vision Bright or Dark.

On my slightly older Sony TV when Dolby Vision content is recognised

Picture Mode will only offer Vivid, Dolby Vision Bright and Dolby Vision Dark.

If you download some Dolby Vision samples report back if your TV is playing them as you would expect.

If they play okay then we can probably rule out the TV and maybe a problem with the Blu Ray Player (don’t believe the seller) or the content you were playing on it.