Ultra Hd issues

[confusedman]

I have had my sky q box connected to my ultra Hd tv for approx two years but occasionally I get error saying it can't detect an ultra Hd tv with error code UH001 . I have been able to change this previously back to ultra Hd but this time it isn't and keeps going back to 1080.

I have a Samsung tv, any ideas on what could be causing this and how to stop it would be appreciated 

[PandJ2020]

What HDMI cable are you using?

[confusedman]

Using cable that came with sky q box, same cable as was connected yesterday when it was working fine, nothing has changed connection wise 

[PandJ2020]

Have you got another cable to try?  Ensure they are fully seated.

(Has the TV been 'rebooted'?)

[confusedman]

I've done nothing apart from reset tv and it has now connected as ultra Hd! Not sure if the issue is with tv or sky Q box but very frustrating when it happens 😩

[PandJ2020]

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@confusedman wrote:

I've done nothing apart from reset tv and it has now connected as ultra Hd! Not sure if the issue is with tv or sky Q box but very frustrating when it happens 😩

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TV's aren't 'dumb' any more.  They have complicated software (firmware), settings and memory buffers etc.  A 'reboot' of a TV is sometimes required, just like the Q box...