Bravia 8 - K65XR80 - restarting - regularly

[Likanmin]

I purchased a 65in Bravia 8 TV (K-65XR80) in August 24.  I’ve been very happy with overall quality, functionality and responsiveness.

However, During that time (5 months) I’ve had approximately 5 Power Off/On (I.e. Restarts) while watching the TV. Two while streaming, Two while watching Blu-Ray player and once while simply on TV Home screen doing nothing!

I started to investigate (using System Uptime) to see if they were any restarts while not watching the TV – and there are.

Specifically, if the TV has an Uptime of over 26 hours (approx.) and then switched off by the remote (i.e. goes into standby), then 6 minutes later (actually 5m 55s) it performs a power restart and the Uptime goes to zero. If the Uptime is less than 26 hours it won’t power restart after going into standby.

The power restart is obvious – there are 2 “clicks” – one as the power goes off and another “click” when the power comes back on. Followed (20-30 secs)  by the power light briefly coming on at the front of the TV as the OS is loaded.

The above is predictable and reproducible! So potentially two problems – or the same problem manifesting in two ways?

At the moment, I’m concentrating on why it appears to “schedule” a power restart (power off/on) every time I power off (go into standby), when the uptime is greater than 26 hours!

I have tried a few things to see if it makes any difference:-

• Removed all HDMI Connected equipment – only coax and Wi-Fi connected. Left for more than 26 hours.
• Remove ALL connections (inc coax) disconnect from power socket for 2mins+
• Use “Other” remote (IR remote rather than RF remote)
• Cleared internal cached storage – several times.
• This happens with both Version 112.627.030.1EUA and the latest from December -  Version 112.628.050.1EUA.
• Ran all Diagnostics from Help screen – all OK.
• The Power outlet is fine – same one I used for previous Bravia TV for 10 years with no issues.

None of the above makes any difference.

My last option will be a factory reset. I don’t want to do this yet due to the number of “apps” I need to configure, etc.

So, my question – does anyone have a Bravia 8 TV (I’m guessing size is not relevant, but who knows) that could look to see if they get restarts (power Off/On)  after using  “Power Off” from remote (i.e. standby) AND after an Uptime of 26hours?

Given the reproducible nature, I’m not sure if this is a “bug” or a “feature”. I don’t think it’s a fault as such. It does look like some obscure “logic” in the software (or firmware).

[TheRealOG]

@Likanmin 

I'd say proceed with the factory reset to exclude the fact that this could be a bug or software related matter! 

I don't have a Bravia 8 TV to answer your question tho! Sorry 😅

[Likanmin]

Hi, 

Thanks for the comment, I'm currently making note any of the configuration changes I might have made and hope to factory reset next week. 

I will feed back information as I get it!

[Likanmin]

UPDATE:
Factory Reset carried out this week. All data and configuration erased.

Interestingly it did not revert the Software Version in any way – it was still the recent December 2024 version. (i.e. 112.628.050.1EUA). This was the first thing I looked at after the initial setup.

I only set up and tuned the TV channels, connected Wi-Fi and made no other adjustments.

I did not connect anything to the HDMI ports (or any other port, other than aerial). Or load any extra Apps.

I waited 26hours, 15mins – confirmed by Uptime setting (i.e. over 26 hours).

Powered on TV and waited for a few minutes.

I then powered off TV by remote (i.e. into standby).

Exactly 5mins 55secs later the TV carried out a “Restart” – Power off/ Power on as described in original post. The Uptime was now a few minutes. This is still reproducible.

So I’m convinced it’s a “feature” of the software. The question is “Why?”.

Without confirmation, or otherwise, of another Bravia 8, I still don’t know if it’s my TV or a general feature.

I’m still hoping some reader may have a Bravia 8 and see if they can reproduce this (or not).

I will also go back to my supplier for some comment.