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I have a sub that continually stop working, looks like it is not connected to power - but it is.

I noticed if I disconnect it for couple hours/night and connect it in the morning it starts working and join the system - all good for some time. Than it happen again and again. Disconnecting it for 10-15 min does not help it acts like it is dead (does not blink the led). 

Each time I want to watch the movie or listen to music this guy is off it is terribly frustrating. 

I already change power connector to something like this: 
Honeywell Surge Protector/Spike Guard/power Extension/Power Strip, Master 12000Amp,1.5 Mtr Cord.

But it did not make any difference :(

You may have a failing power supply. I suggest you contact Sonos tech support.


It might help if you generate a diagnostics report, perhaps one when it’s running, and one within 10 minutes of it dropping out.