Why does my TV turn on by itself?

Vino from Las Vegas, NV

Episode 1511 (1:38:14)

Sony Bravia TV

Vino recently cut the cable and is streaming YouTube TV, but he's having trouble streaming on his Sony TV on Roku. It turns on by itself. Leo says that it's likely a CEC problem, which has to do with the HDMI settings. It's basically designed to automatically turn on the TV when he turns on his Roku. It doesn't work very well on Sony. So he should go into the settings and turn off BraviaLink. That'll solve it.