Sonos:Sub not working

I found the solution - works for me at least..

- unplug your SUB and leave it unplugged overnight. Plug it in and it works the next day.

prior to that I have tried factory resetting the SUB, re-adding the sub to the system, rebooting the router, but all to no avail… somehow it works when I leave it unplugged for a night. I don’t know why but it works..

I send Sonos sub gen 3 isn’t having 

I had a similar issue with my sub gen 3 that suddenly stopped functioning. No sound, no power light nada. I spent about an hour and half with Sonos support trouble shooting the issue but no luck. I was still under warranty and I was told they would replace it. I left the sub unplugged for the night. The following day I plugged it in and the sub powered up. Everything there after functions normally. There might be an internal battery that needed to complete loose it’s charge or something to clear the memory. I have no clue but I was happy I didn’t need to ship it away. 

Unfortunately, my Sub seems to have contracted the same illness being discussed here. A little about my system; I have the Sub paired with the Arc in the living room, a Five in the adjacent dining room, an Amp powering the backyard Sonance system, and a Beam with 2 surround Ones upstairs in the bedroom. I mostly use the system for streaming music downstairs, (which I do daily after work) so I’ll have the Arc+Sub, the Five, and sometimes the Amp all streaming simultaneously. Everything has been working beautifully for months until last night when I went to watch a movie on the living room TV where the Arc+Sub are connected. No Bass. I noticed immediately, and insisted that movie night could not continue like this. So I spent about an hour unplugging and re-plugging, factory resetting both the Arc and the Sub. A lot of the times I did this, the Arc wouldn't register the Sub and instead of Arc+Sub in the app it would say Arc+?. I ended up removing and and adding the Sub back several times. When it would finally register as being re-connected each time, there would still be no audio from the Sub. Eventually I gave up and we watched a show upstairs in the bedroom instead. So I find myself here on this forum and the more and more I read, the more discouraged I’m becoming. I’m hoping that by now there might be a known issue causing this that doesn't involve me unplugging and resetting every electronic device in the house just to find that it still doesn't work so I went ahead and submitted a support diagnostic request. Confirmation # is 1717452876. Someone save me, I need bass asap! Please, and Thanks!

It’s probably not how close it is to the router in most instances, as the sub usually connects over a 5Ghz ad-hoc connection to the ‘player’ that it is ‘bonded’ with.

What should the sub be connected to in your case? …and can you check that its player has not had its wireless radio switched off in its own room settings.