Which is far more than you can expect from a common user. You make the same mistake as everyone working in tech - you vastly overestimate the capability of Joe Shmoe to do such things.

We are talking about people who are overwhelmed by configuring their email-account on Thunderbird or Outlook, who, when they are on a support call and are asked to "close all windows" stand up and shut the windows in their apartment. With the older generation you might even have to define left and right click with them. These people do not open up their TVs, either because they fear losing their warranty or know how deep their technical knowledge goes (as in "not enough to do such things without breaking stuff").

Also, like i said, be happy that it worked. Many Smart TVs simply refuse to work if a component fails, regardless of reason.