I agree with the comments made here.It's a good deal. And a good TV.
Buy it. Use the TV normally and enjoy.
Switch channels and content regularly.
1+1 is for panel issues.
Put your mind at ease and enjoy
Disclosure:
I have this model. Bought during 2018 Deepavali
Cheers,
Raghu
Would only advise to ensure that you are not getting a display piece.
I have a C765 bought in December'17.
No issues so far, except that having experienced the picture quality from this TV, it is impossible to watch other TVs in the home and hence those rooms are unusable for me now ;-)