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Hi everyone. For several weeks in the conservatory I haven’t turned on my Sonos One set up. Last night I turned the system on and immediately updated the two speakers. I now have a steady white light on the right hand speaker and a flashing green light on the left. I unplugged the cables and left it for 24 hrs but now the same thing is happening. The only speaker with sound is the right hand one. Any ideas? John.

I suspect it’s dropped off your network or lost the pairing. https://support.sonos.com/en-gb/article/sonos-led-lights
 

You might get a better clue too if you look at Settings/System and report what it says for your Products. 


Thanks nik9669a. That’s exactly what I’ve done and found a missing product. The system did a reset and reinstalled the left speaker. It is now fine. Thanks for reaching out. John in York.