LG Slim6 Soundbar

I’ve had this for years and it’s worked great. However, about 3 months ago it started doing this thing where after almost exactly 30 minutes of use it gets really quiet, and the only thing to make it go back to normal is to turn it off and back on. I’m not sure why, I’ve tried to do a factory reset but it still is doing it. I’ve also tried multiple sources and it doesn’t make a difference. It’s a minor inconvenience for me but my wife hates having to pause and power cycle so I’m getting rid of it. It’s a bit dinged up, but it’s completely functional and sounds amazing. I also don’t have the back for the remote, I lost it a couple years ago.