Fuses blow for a reason. The fuse blowing prevents fires and minimizes secondary damage. On rare occasions a design error causes regular fuse blowing in a product, but if this was the case here, we’d have a rash of blown fuse reports.

I don’t recall any similar reports in this community. Search online for other DIY repair discussions for this model. BTW: SONOS does not offer repair services.

Buzz, are you working for Sonos, right? I see you everywhere trying to minimize the issue, giving analogy examples with hospitals and sick people. How come you don’t recall people complaining about same issues since you responded in other threads for the exact same issue. Same happened to me, with One gen 1. Opened the sh… to found out that fuse and varistor are intact. I suspect everything happened after an update, not after surges as you try to “drive the discussion” everywhere. My house is modern, lots of protectors on AC. The other one is intact, all other stuff intact. I know, things happen. But there are LOTS of reports for this issue, not an isolated and rare case. 

​@buzz does not have a Sonos identifier next to his avatar, so he can’t be a Sonos employee. 

So you don’t know then.

I don’t know. That’s why I said “I suspect”. Everything is clean on the pcb, I measured every visible component on the upper side (without removing the back though). No hissing, no smell. If it’s a surge, it usually blows the fuse. That’s why I just suspect. 

Your argument appears flawed to me. If you suspect it was due to an update, then why did the same not occur on your other devices?

I don’t want to enter in a dispute with you on this, and you are not helpful. I am pissed-off and frustrated enough, so limited energy to debate. However, the hardware is a thing I’ve tried to check (with tons of knowledge limitations, just common sense), software is a thing I can’t check at all since sonos doesn’t have a feature allowing me to download a log report to try to corelate events. My assumption might be flawed, I agree. On “why the other is ok”… well, I don’t know, can you help me find out?

I’m confused. Is the fuse blown?

Since you’ve been reading my posts, keep in mind that: “once you’ve decided that that the issue must be m … ] or cannot be c … ], you are likely to be blindsided”.