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

TCL Roku smart tv sound low on dialogue

I just bought a TCL Roku tv and when I play a show I can hardly hear the dialogue I have to turn up to 70 the when a commercial comes on it blast you out.  I have changed setting to stereo and theater nothing works any suggestions? 

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