got a new Roku Express about a month ago. It worked perfectly for about a week and then the sound/audio went out. I followed suggestions and set audio to Stereo and HDMI to PCM-Stereo which fixed it. About three weeks later now, sound went out again. Tried all suggested fixes including cable, factory default reset, power off/on, batteries out out of remove, TC power off/on...nothing works. Video is great, just no sound. Do I now one a Roku-Brick?
If you are still unable to resolve the issue, can you please provide the serial number of your Roku device from Settings>System>About? I'll be able to pass it along to our Support team who can assist you further.