Just got a Roku Express. When I first load up the Roku I hear the audio on the Roku start up screen but then using any channel absolutely nothing. I have checked and changed HDMI cable, reset and factory reset numerous times. Tried every HDMI port. Gone into Audio and tried every available option. Powered everything off and on numerous times. Tried updating (None available). Tried factory resetting and changing audio in TV menu itself. I am at a complete loss
From the Roku home page: Settings > System > System system restart
If that doesn't fix it, as a temporary work-around, when you start a program with no audio, see if pressing the rewind key on your remote will get you audio on that program.
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Streaming Stick 4K+ 3821 | Streaming Stick+ 3810 | TCL Roku TV 43S245/C107X
Have tried. Also tested the same port and wire with PS4 and Blu Ray player works fine. What confuses me the most is the sound at the splash ROKU screen yet no audio anywhere else. Tested with another TV and works which makes me think a problem with Polaroid TV its just that opening screen that confuses me most. Why there but nowhere else.