I was streaming a movie on Netflix and suddenly the audio and screen signal of the TV stopped, like if the roku was unplugged from the TV. The white light It's still on but it doesn't emit anything to the TV. I don't know what to do, I tried changing it to the hdmi port of the tv, with another hdmi cable, and in other TV and didn't work. Please help Roku Express (3930, 3931 series)
That kind of sounds like a dead Roku. I assume when you tried it on another TV you had to unplug the power and HDMI cables.