Your Digital Media Has Never Looked So Good
Posts: 15
Joined: Sun Jan 27, 2008 4:52 am

Re: PSU Dissected for Repair

Sun Oct 21, 2012 3:59 am

How about working with 2 separate psu?

One for 19v, the other for 9.5v?
Posts: 15
Joined: Sun Jan 27, 2008 4:52 am

Re: PSU Dissected for Repair

Tue Oct 23, 2012 8:34 am

Perhaps one of the experts could help me?

Seems to me that my psu did not crash (because i managed to never leave it in standby but rather had the power shut off when the device was not in use.)

But now i made a mistake: i switched the power on and immediately off again which made the device make a bad noise. After that it did work, but had forgotten everything and asked for all that configuration stuff. Then i turned the device off.
The other day the device wouldn't work anymore: it starts for a short moment, says "roku soundbridge" on the display and stops working with a bad noise. That is what it does everytime i switch it on.

As i thought it might be the psu-death i tried to get it working with an external 12 volt unit. But the behaviour was just the exact same as with the original psu. So it seems to me that the psu is still fine but anything else has died.

I would be very happy if one of you experts would have a helpful guess out of my description of the malheure what might be defect and what i could do about it. Otherwise i would have to bury that baby.

reinhard (from germany)
Posts: 122
Joined: Tue Jun 20, 2006 7:06 am
Location: Germany

Re: PSU Dissected for Repair

Wed Oct 24, 2012 12:13 am


did you try removing one the 3 amplifier connectors from the main board to find out if one of the digital amplifiers causes the problems?

(from Germany, too)
Posts: 15
Joined: Sun Jan 27, 2008 4:52 am

Re: PSU Dissected for Repair

Wed Oct 24, 2012 1:07 am

Bis jetzt habe ich die beiden Geräteteile noch nicht weiter geöffnet. Ich vermute mal, daß sich Ihr Vorschlag auf das vordere Teil bezieht? Dann werde ich das wohl als nächstes mal öffnen müssen.
Vielen dank für den Hinweis.

Until now i did not open either one of the two main parts of the unit. I guess your hint is up to the front part? So i'm going to open that part as the next step.
Thank you very much for that hint.
Posts: 279
Joined: Mon Sep 19, 2005 8:16 am

Re: PSU Dissected for Repair

Wed Oct 24, 2012 5:38 am

Try booting in safe mode, press and hold a remote button, point it at the radio and then power it on.

Posts: 15
Joined: Sun Jan 27, 2008 4:52 am

Re: PSU Dissected for Repair

Wed Oct 24, 2012 6:39 am

WOW - the safe mode worked! I could enter some input.
But trying to enter the WEP key it says: This step key is not in a valid format. Please double-check that you entered it correctly.

Being sure that i entered it correctly i am stopped here at the OK. What could I do now?
(As I had cut the wires from the original pay i'm working with external 12v for now - could that perhaps be the reason for that behavior?)
Posts: 15
Joined: Sun Jan 27, 2008 4:52 am

Re: PSU Dissected for Repair

Wed Oct 24, 2012 7:17 am

Seems that the device is working!
That is what i did (after getting in safe mode):

1. open my network
2. downloaded the offered update
3. reboot


Thank you really very very much for that hint to the safe mode!
Posts: 1
Joined: Sun Jan 06, 2013 8:12 am

Which DC/DC Converter to choose?

Sun Jan 06, 2013 8:32 am


thank you all for the good documentary - after reading 12 pages I think I know which way to repair my 2 R1000 (this time, repaired internal PSU failed again): external PSU. Maybe someone could help me in verifying my components:

As most DC/DC-Converters have lots of heat loss, I tried to find a converter being able to have more than 1A on the output (for secure startup of the device) and not too much heat loss (don't want to place an external heatsink on the Radio) - available in Germany.

- my favorit: adjustable DC/DC-Converter, output max. 3A, but 29,95 Euros
Traco Power TSR 3-24150 (somewhere between 90-95% effectiveness - I think I won't need a heatsink) ... daechj010u;ACTI ... 2FTSR3.pdf

-expensive one (39 Euro), said not to need a heatsink though only 85% effectiveness
1,5 A PowerTrends 78 SR 109 VC I(out) 1.5 A ... Detail=005

- adjustable DC/DC, needing a heatsink 8,95 Euro ... erbar.html

- cheap one (0,61 Euro) needing heatsink:
ST Microelectronics L 7809 CV 9 V I(out) Max. 1.5A ... Detail=005

What about this one: ... t/4944285/
A flower lot of Pins, but it's even cheeper...

Which one would you choose? Will there be a feelable advantage of the expensive options?

Thank you for your help,

Posts: 279
Joined: Mon Sep 19, 2005 8:16 am

Re: PSU Dissected for Repair

Mon Jan 07, 2013 11:24 am

I would recommend the v7809-1000 if you can source it. I've used it on 4 radios some over 2 years now. It's quite simple to apply, just use the original power supply, ignore the 9V supply, hook the v7809 input to the 19V supply and the front gets it's power from the v7809 output. No heatsink required. No muss, no fuss, just tunes.

Posts: 13
Joined: Sun May 20, 2007 12:09 pm

Re: PSU Dissected for Repair

Tue Feb 12, 2013 7:55 pm

This thread helped me replace my PSU with an external, spare laptop supply. Cost $0.

Thank you to everyone who contributed to the info and discussion!
Posts: 1
Joined: Mon Aug 06, 2007 3:34 am
Location: France

Re: PSU Dissected for Repair

Mon Mar 11, 2013 1:40 pm

I have succeeded in replacing my faulty PSU with two power supplies.
One is delivering 9 V, and the other 19 V. The radio works now like a charm.

Thank you for the informations in this post.

If it can help others, my replacement was not working at the beginnig, as even if you use 2 seperates PSU, you have to put together the two black wires (0 V must be connected together).

I have just one question to add : is it necessary to connect also the white wire (shield) to the two black wires (0V) ?

Thanks again,
Posts: 4
Joined: Sun Feb 28, 2010 3:18 pm

Re: PSU Dissected for Repair

Sat Sep 13, 2014 1:27 pm

I just had an R1000 repaired by Pyramid Audio in Austin TX. I just got the repaired SoundBridge back and it is working just fine. I strongly recommend the Pyramid Audio folks. You send them your device, wait 4-6 weeks, and it is returned. Total cost was $104 plus the cost to mail the package to Texas from San Francisco.

You can learn more at their website:

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