If the TV won't turn on even when pressing the power button on the TV, then it's unfortunately time to call Samsung Support. For those allergic to talking on the phone, Samsung offers some other ...

Reset And Pair The Samsung TV Remote Again If your Samsung TV remote ... Then, hold down the Power button on the remote for about eight seconds to drain any residual power. Once done, reinsert ...

so you’ll want to jump right to restarting your Samsung TV. There are two options. The first is to turn on the TV and point the remote toward it while pressing the power button for 5 seconds.