Contributor I

Play 3 Powersupply fault.

103 replies
42848 views

Hi,
My Play 3 died the other day and I am just outside my warrenty period 😞 I contacted sonos customer services who did not help me in the slightest. I have now looked at the power supply board and seen that the board around one of the input capacitor has burnt out and or the cap itself.

As customer services won't even sell me a new power board, does anyone have a circuit diagram for this board so i can attempt to repair it myself. ( I am competent with electronics).
P/N: RN-002657 (board number)
Date: 08-04-11

Also has anyone else experienced this fault. I am assuming a power surge has done this.

Many thanks

Jamietaylor13

Power

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I

ianidor

Lyricist III

Hi
It’s clear there is a bad batch of PSUs in early models I have 3 that have been repaired
If anyone needs help with which components I have changed I’m more than happy to assist

jgatie

Hi
It’s clear there is a bad batch of PSUs in early models I have 3 that have been repaired
If anyone needs help with which components I have changed I’m more than happy to assist

I have a stereo pair of Play:3's that were the very first ever manufactured. They have shown no PSU problems. Thousands of others report the same. I suggest to you that your problems may be more environmental than anything specific to the Play:3.

I

ianidor

Lyricist III

Does anyone know where we could get a drawing ? PCB diagram?
If possible?

Imagine Luismi

Contributor I

Well, from my experience and from two play: 3 devices that I still have not solved, I believe in two different breakdowns. One fault comes from the capacitors of 400v 33uF and another fault I think by the intermediate layer of printed circuit.

I

ianidor

Lyricist III

Hi imagine-Luismi
In my 3 play 3’i have replaced....
The 3 caps 33uf 400v
The bridge rectifier GBU408 (GBU406)
The small t2a fuse red
All parts from RS COMPONENTS
I will find the part numbers for you to purchase on their site
Also you will need to repair the track from the rectifier to the caps see attached picture

I

ianidor

Lyricist III

Here’s the parts I’ve had from RS

I

ianidor

Lyricist III

Hi

Could you post a picture of the SMD thick film resistor r308 or tell me the number on it
I have a friend that changed the caps and not the rectifier the bad rectifier has burnt R308 out
See attached pictures

Imagine Luismi

Contributor I

Hello again,
I think you were very lucky that your PLAY: 3 was repaired with just replacing the three capacitors and the bridge rectifier.
I just extracted the bridge rectifier and it's OK. It is complicated and tedious to repair without a technical manual. Resistor R308 is OK in both PLAY: 3. and it's 10K

I

ianidor

Lyricist III

That’s great Luismi
I will order some now
I return home to the uk 13th Oct
I could check whatever voltages you need then ?
Hope this helps
Are you in the uk ?
I could ship a working PSU To you ???
Thanks
Ian

Imagine Luismi

Contributor I

Hello,
I live in Spain, Granada.
It would be of great help the output voltages and / or the TP test point.
I did not understand exactly "I could ship to working PSU To you ???"

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