I agree 100% been in touch a waste of time mines out of warranty but tv only 2 yrs+ old it should not happen
Why don't you contact your retailer? If it is a known fault which it clearly is then you make a 2015 consumer claim against them, up to 6 years after purchase, you just need to show it is known fault, which these forums show it is. Go onto the thread ks owners refund more info thread and their are links and advice on how to get your free repair, replacement or refund taking in the time you have owned.
Everyone who has the same problem should keep on at Samsung I am customer services are not good
Have you informed you retailers, as well as Samsung, as it is the retailer who is responsible under the 2015 European Consumer law, not the manufacturer,like Samsung. Also remember if it is a known fault the retailer is responsible to provide a repair and if not successful, you can insist on further repairs, or replacement, or refund taking in to account usage.
I put more info in the ks owners refund more info thread here.