Question about LED TV's going from SD channel to an HD channel

[tjemartin]

Hello,

I have a Vizio LED TV (2016 D-Series model) as well as cable TV (Cogeco in Ontario Canada). I noticed that when I go from an SD channel to an HD channel or visa versa, my TV goes blank for a second. I was just wondering if that "SD/HD switching" is harmful for the TV in any way?

Thank you in advance.

 

[Rocky Bennett]

No, it is not harmful in any way. It is normal, just circuits changing their processing.