Roku TV volume stuck on 0 but I think it's the remote, not the TV.
Issue details:
1. When pressing the volume up or down buttons, the volume indicator pops up at the top right of the screen, but the volume changes to 1, and then instantly changes back to 0. The mute button works properly.
2. When pressing the play/pause button, it activates the voice feature. The voice button also activates the voice feature.
All other remote buttons seem to be working properly. When it was brand new, all buttons on the remote worked properly for a while, but we set up an external AV unit for sound using HDMI ARC. So for a long time we used a different remote for sound and always pressed the physical button on the TV to power on and off. We barely ever touched the Roku remote, but we need to use it now and these buttons don't work properly.
I have taken the following troubleshooting steps:
1. Verified these issues with no devices plugged into any TV inputs. I unplugged all external devices and set audio to TV speakers.
2. Restarted the TV.
3. Replaced the batteries in the remote.
4. Tried to factory reset the TV but I'm unable, because it requires that you press the play/pause button three times, but that button just activates the voice feature.
5. Followed basic instructions on various forums and YouTube videos about this type of issue, like removing batteries, blowing out and pressing buttons to clean them, verifying no other IR devices nearby, etc.
TV info:
Roku TV: 7121
TCL model: 65R61
Serial number: YS0092817738
Software version: 11.0.0 - build 4193-30
