Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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bradcook
Level 7

TV screen mostly black

I have a brand new Roku premier. Plugged it into my Samsung 65" 4k Ultra HD TV (tv is roughly a year and a half old) and it let me set up my new account, but now when I have the Roku open it spends 95% of it's time with a black screen on the TV. The other 5% of the time, the Roku home screen will flash onto the screen, but it's so fast, you cant even read anything on it, then it immediately flashes back to a black screen. I've switched cables with known working devices, so I don't think it's that. 

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