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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Level 7

Vizio V5555-G1 with Roku Streamer

Hello All. I have a Vizio V555-G1 TV with a ROKU Streamer HD plugged into HDMI3.  Within the last couple of weeks, my HDMI-3 input will go blank.  Nothing from the ROKU box, or so it appears.  I have swapped the box with a streaming stick and everything will work fine for a while and then the same thing happens.   No more input on HDMI-3. I've tried HDMI-1 and -2 with the same results.  I have to believe there is some sort of issue of compatibility, but want to see if anyone knows of a solution. I take bot ROKU devices to my upstairs TV and they work fine.  Thank you!

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