Dead Play:5 need schematics or tips

JesperBandersen,

SONOS does not support field service. Schematics are not published, but you may be able to find partial schematics generated by users. (I am not aware of any)

Same issue here.
I'm looking into doing a repair in my workshop, not field service :)

I opened it and see it looks quite well built, except for the cheap Chinese/Taiwanese capacitors.
At least none of them are bulged though.

Let's keep each other updated here about any info we find.

Actually mine had the mains fuse open and one diode in the mains side rectifier shorted.

Power mosfet and secondary rectifiers were ok.

I'll check the cheapo capacitors with an ESR meter in the evening.

Everything in this unit is very well glued, no wonder repairing is expensive 🙂

Cheapo caps were within specs and at least unit powers up now.

Seems unit needs to be connected via ethernet or some link thing...complicated (I would have hoped for WLAN or BT)

I will try to arrange that and test it. We will then see if this 3€ repair did the trick 😉

@jlithen - I think I'm having the same issue - a few questions if you don't mind:

1. I don't see an internal fuse - do you mean the power cable fuse?
2. Which diode exactly was shot for you?

Thanks!

1. Fuse is close to mains connector. Red cylindrical one I'd say. Maybe it was 3.15AT??? Not sure.
Measure every component in series with line voltage if you're unsure which one is a fuse.

2. Rectifier on the mains voltage side. There is only one rectifier. Black with 4 feet.

Sorry but if you do not recognize those components you may need to study some more electronics before repairing.

In fact you better measure capacitors and switching FET before you attempt to power it up.
Check as much as possible ...and preferably power it up with current limiting.
Some components cause lots of damage if unit is powered up with them blown or shorted.

1. Fuse is close to mains connector. Red cylindrical one I'd say. Maybe it was 3.15AT??? Not sure.
Measure every component in series with line voltage if you're unsure which one is a fuse.

2. Rectifier on the mains voltage side. There is only one rectifier. Black with 4 feet..

Correct, check these components first, after that - also verify that the thermistor next to the power socket isn't faulty.

KBU606 is the rectifier, a bit hard to desolder - but possible.

3.15A is indeed the fuse (3.15a slow blow fuse) - https://ae01.alicdn.com/kf/HTB1zU5QKVXXXXXcXXXXq6xXFXXXe/-100pcs-lot-382-T3-15A-Miniature-Slow-Blow-Radial-font-b-Fuse-b-font-T3.jpg

https://sc04.alicdn.com/kf/HTB13d3jJVXXXXcRXFXXq6xXFXXXi/6A-600V-diode-bridge-rectifier-KBU606-50pcs-lot.jpg

And as jlithen said - messure all other components on the HW-side aswell (capacitors, diods and similar).

Good luck!

Thanks a lot Jine
I have a sonos5 first gen with a power supply issue and you're right, it was a problem of fuse and rectifier.
The rectifier was effectively hard to desolder. After replacement of both component my Sonos sings again !!
Thanks again to the community
JJH from France

Thanks!

Exact same symptoms. Just desoldered the fuse and rectifier. Fuse is blown and measuring the rectifier, it seems that one of the diodes has failed. Will be picking up spareparts tomorrow - crossing my fingers that it works!

But someone should confiscate the hot glue gun from the workers at the assembly-line! Damn :)

/Dennis

And it worked! New rectifier and fuse, and the Dead:5 is now a Play:5 again...