LG gives a menu path for each webOS version. To show how to adjust the aspect ratio on an LG TV, we follow only LG's US support page, "LG TV - How to Adjust the Aspect Ratio". We haven't tested these steps.
LG puts a warning before its first step. For how to mount an LG TV on a wall, this article follows only LG's US support page, "[LG TV] TV Wall Mounting Steps". We haven't tested any installation.
A TV that shows nothing may still be on. If you're asking why won't my Samsung TV turn on, Samsung's US page, "Samsung TV will not turn on", sorts the problem by one small light. This article follows that page only, and we haven't tested any TV.
If a device such as an Xbox, a PlayStation 5, a Blu-ray player, a cable box or a Roku doesn't show up on your Samsung TV's screen, Samsung's support page says you could be having an issue with the HDMI ports. This article covers a Samsung TV HDMI port not working, using that page only and Samsung TVs only.
According to Roku's support page, you can often use the same remote that came with your cable or satellite box, or even a universal remote, to control your Roku TV. This article covers how to program a universal remote to a Roku TV using that page only.
Getting a Samsung TV online takes a few menu selections and your Wi-Fi password. Samsung's US support page, "Connect your Samsung TV to the internet", says Wi-Fi is the easiest and most seamless way to do it. This article covers how to connect a Samsung TV to Wi-Fi using that page only.
Before you work out how to connect a Bluetooth speaker to a Samsung TV, it helps to know that Samsung generally treats Bluetooth as a last resort. Samsung's US support page, "Pair a Bluetooth speaker to your Samsung TV", gives the menu path and a list of cautions. This article follows that page only.
Wondering what actually makes a TV "smart"? This article answers the question of what a smart TV is using Samsung's US buying guide, "What are Smart TVs?" It is one brand's guide, so everything below is attributed to it and none of it comes from independent testing.
If you keep asking "why is my Samsung TV slow?", Samsung has a short answer on its US support page, "Samsung TV takes a while to turn on or has other glitches". It ties slowness to memory and offers two ways to clear it, both described below.
Want what's on your phone showing on the big screen? Here is how to connect phone to TV when you have a Samsung Galaxy phone and a Samsung TV, following two Samsung US support pages: screen mirroring to your Samsung TV and connecting a Samsung TV in the SmartThings app. Samsung gives two routes, Smart View and SmartThings. Other phone brands and wired connections aren't covered here.