The Samsung repair agent technicians came here this afternoon. They've replaced different boards in the TV panel and the One Connect box. They had some diagnostic information that was captured before, by their colleagues, and that suggested a hardware fault.
As usual, they used a support stand/trestle when working on the TV.
The small red light was as described previously - sometimes it was on, and flashed/went off with a remote control press. Sometimes it was off but would come on/flash with remote press. The only thing that would 'reboot' our TV was to turn off/on at mains.
Worst thing was, with the new boards, everything was reset so I've had to set it all up again as a new TV - the 'Smarthings' app process didn't work properly to restore all the settings nor did logging in to my Samsung account - so had to reenter the credentials for the different apps, service provider settings, different boxes on the HDMI connections and so on. The sound settings were also lost. I mentioned how the TV had to be reprogrammed to do with the rattling speaker before but got fobbed off and told that would be a separate fault to be logged again - so I don't know if we will now have trouble with the speakers again - one of the guys did say he reseated the speakers as one seemed loose of something. I've started from scratch with the sound and will see how it goes.
Also had to repair the remote.
I'm told the old boards will be wiped clean of any of my data by Samsung securely.
I will see if the TV has problems with power up anymore and advise. The fault may take some time to show/discount as fixed. It could be that if you have same problem you need a hardware repair?
