Sounds similar to the ordeal that I had with my B&O system. Initially, I would get blips of static from one or two speakers and then eventually, the entire system died. I was getting no music, bluetooth, etc. as well as no alert tones from the parking sensors. I ended up replacing my amp, which fixed everything. Here is my thread on the issue if you want to read into it to see if you are having the same problems as I had,
https://f10.m5post.com/forums/showthread.php?t=1585268