volume changes on its own

I think they'll be able to help you. I *think* that there's data within the diagnostic that tells which device is sending the signal in that changes the volume. Never had this problem myself, so my knowledge is only anecdotal.

Ive been having this problem since I got our playbar in 2016 and have sent in more than a few diagnostics but because its random the problem may seem to be fixed and does not appear for a while and then it goes and lowers the volume randomly. when you try to increase it it just falls back down again. I have truly found this disappointing and hugely frustrating especially when have tried everything to no avail. even plugged in ethernet and still happens. any suggestions as Im seriously thinking of taking it back and getting it seem to or replaced. over two years of this and Ive had a guts full!

I’ve been noticing this lately. I usually play my music library on a play:5 in the bedroom at night. Turn on the sleep timer with the app on my iPad. The next morning, the volume on the ipad will be down to about 1 click above mute.