Answer to "Why my Samsung TV won't turn on?"First, you need to ensure you have power running in your circuit: 1) Does your TV connect directly to a wall outlet or do you use a splitter or a surge protector? If direct connection into the wall, check to see that your wall outlet has not had had the short circuit trigger. Simply plug in another device into the same outlet and see if it works. If it plugs into a splitter or surge protector, plug it into a direct wall outlet to see if the surge protector is the problem. IF your TV is plugged directly into wall outlet AND wall outlet has power AND your TV does not turn on at all, then we would need to do some troubleshooting. How do you turn on the TV? through a remote or do . you use a button? Could your TV be in standby mode? What is year of manufacture, size, name and model of TV? Do you happen to have the user manual? It does have troubleshooting questions at the end of the user manual.