Solving playback issues

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

No sound on my tv

I have a surroundsound system and I plug the Roku into the HDMI port on the TV but I cannot get any sound on any of my TV channels. Does anyone have a solution I sure would appreciate it?

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Level 7

sound some days and no sound other days

Two days sound works, next few days there is no sound..  some days have sound but top half of picture is green.   and picture is in top left corner 

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