Yeah, I also strongly suspect that this is either a software bug, or something is wrong with the remote. Here is an issue which seems to hint at a hardware prob

Yeah, I also strongly suspect that this is either a software bug, or something is wrong with the remote. Here is an issue which seems to hint at a hardware problem: https://www.amazonforum.com/s/question/0D56Q0000DailmRSQQ/mute-unmutes-automagically https://www.amazonforum.com/s/question/0D56Q0000DailmRSQQ/mu... > But if I press the mute button real hard, it mutes. Same with unmute: if I press it real hard it unmutes. If I press the button normally, it mutes for 2-3 seconds and then unmutes on its own. Another issue when a soundbar is connected: https://www.amazonforum.com/s/question/0D56Q0000DkFJCFSQ4/fire-tv-unmutes-on-its-own-after-a-delay-when-using-hdmiarc-to-the-soundbar https://www.amazonforum.com/s/question/0D56Q0000DkFJCFSQ4/fi... > Same behavior. None of my FireTVs will stay muted when hooked to a soundbar via HDMI/earc. This is software related to a FireTV update in the last year as it is happening on all firetvs despite the soundbar bar and did not have this behavior when initially set up.