topic Re: XR48a90K CEC Setting in Android TV

XR48a90K CEC Setting

DrMopp — Tue, 04 Mar 2025 15:28:40 GMT

I have what I would think is a fairly standard arrangement of Sony Bravia XR-48A90K, SkyQ 2TB box and Bluesound Powenode streaming amp. Sky box is set at 2160p 10bit and connected to hdmi 4 input, which is set to Enhanced format. Powernode is attached by HDMI to Input 3 and sound output is Dolby Atmos (when transmitted of course). All good so far, however when the TV goes into standby, Bluesound support tell me it issues a mute command, (visible in the Powernode technical log) and have suggested I need to turn off CEC i n order that the TV returns to normal volume when taken out of standby. I cannot see where I can do that - help appreciated.

Re: XR48a90K CEC Setting

LightFoot — Tue, 04 Mar 2025 16:01:41 GMT

Hi @DrMopp CEC in Sony speak is Bravia Sync. Settings -> Channels & inputs -> External inputs -> Bravia Sync settings.

Re: XR48a90K CEC Setting

DrMopp — Tue, 04 Mar 2025 18:10:57 GMT

Thanks for the confirmation. Thought I'd only made one change in that section such that Auto devices off = N and Auto TV on = Y, now have no sound on any UHD program. Also SkyQ box now shows as Player_1 clearly need to start again

Re: XR48a90K CEC Setting

DrMopp — Wed, 05 Mar 2025 13:21:48 GMT

No sound on UHD was a red herring in that it was only apparent when Sky box was set to Dolby Digital Plus, and was resolved when set to Dolby Digital. The question remains though, how do I turn off CEC?

Re: XR48a90K CEC Setting

LightFoot — Wed, 05 Mar 2025 15:17:20 GMT

@DrMopp wrote:
The question remains though, how do I turn off CEC?

Hi @DrMopp

My apologies if I was not clear. CEC = Bravia Sync control. You turn off CEC by turning off Bravia Sync control (see image). By turning off CEC you break the link to connected devices. For example with CEC on, the TV turns on when you turn on the Sky Q box. With CEC off the TV doesn’t turn on when the Sky Q box is turned on. Most people prefer CEC on.

Edit: Note Sky call CEC HDMI control, so CEC = Bravia Sync control = HDMI control.

Re: XR48a90K CEC Setting

DrMopp — Sat, 08 Mar 2025 12:53:02 GMT

@LightFoot Sorry for delayed response. I understood what you meant, but was unable to turn off Bravia Sync as the option was greyed out with the switch set to ON. The message said it was 'unavailable with a complatible audio system connected' . I too prefer CEC on, but Bluesound support were telling me that the audio system technical log was showing a 'mute' command when the TV was put into standby, (which was the reason there was no sound when the TV was brought out of standby again) and that I needed to turn CEC off. After 'playing' with the settings on SkyQ box, Bluesound Powernode and the TV I now do not have this problem even with Bravia Sync switched on, so problem solved. Thank you for your insight.

Re: XR48a90K CEC Setting

DrMopp — Mon, 17 Mar 2025 12:37:25 GMT

Spoke too soon. Putting TV in standby mutes the Powernode and so no sound when TV turned on again. Plus random incidents where changing channel has muted sound.

Re: XR48a90K CEC Setting

MaggieGreene — Fri, 21 Mar 2025 17:34:42 GMT

Hi @DrMopp, make sure to control the TV from the TV remote control and not the remote control of the external devices.

Also, try these steps and test again:

1. Disconnect all externals (e.g. sky box, Ariel cable, HDMI cables or USB, etc.).

2. Unplug the TV from the mains and leave it for 1 minute and then plug it back.

3. Make sure the software is updated: https://www.sony.co.uk/electronics/support/oled-tvs-android-a90k-series/xr-48a90k/software/00349283

4. In case the issue persists, perform a factory data reset: https://helpguide.sony.net/tv/jaep1/v1/en/08-01_03.html

Re: XR48a90K CEC Setting

DrMopp — Sun, 23 Mar 2025 16:06:59 GMT

Thank you for your response, however using the TV remote made no difference. The SkyQ remote has always been used to control both TV and Sky in the past without issue.

Re: XR48a90K CEC Setting

TheGOAT — Sat, 29 Mar 2025 14:56:29 GMT

Hi @DrMopp Have you checked for any software updates? If it's on the latest updates, then you could report this to the technical team at Sony to figure something out for you: https://services.sony.co.uk/supportmvc/en/contact/