HDMI cable upgrade

[Rookies]

Hi,

John Lewis was trying sell me some £40 HDMI cables yesterday saying it would fix a flicker issue I've had but I couldn't see it helping as it was a Funnt type of LED flicker rather than a image flicker. All my HDMI are already high speed cables. But not as pricy as these monsters.

Any way yesterday on my return home I pulled out all cables out of tv turned everything off at the main for a good hour. Did a services factory reset on the to then set everything up again. So far all seems good.

Only one thing I notice but never noticed before. Is when changing sky channels that blue screen appears it some time flicks only once sometimes it doesn't. Is this normal?

 

[TwoJs]

Currys are scummy when it comes to ripping you off on cables not required, but I didn't think JL's reputation would be at is as well !!
Your high speed cables should be fine, aa long as there not damaged

 

[Trollslayer]

Below 5 metres if there is a cable problem then the cable is faulty, you don't need to spend a lot.
Above 7 metres cable performance can cause problems e.g. 'sparkles'.
As TwoJs said, a cable marked "High Speed" will do the job, ignore any rubbish about HDMI versions as they don't apply to cables but to the electronics in equipment.