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

Some apps have no sound

Today out of nowhere sound is gone on some Roku apps... some are fine (netflix) but most others (youtube, nbc, etc....) have video but no sound anymore... what happened ??

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Level 21

Re: Some apps have no sound

Did you just get the Roku 9.4 update?  Check via Settings > System > System update.   If so, while you're there, click Check now and make sure all your channel apps update to their latest 9.4 compatible versions.

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