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Tutor

Dec 14, 2016

Solved

Replacement power supply, who sells them?

Hi I purchased a ReadyNAS NV+ in 2009 which has been my main backup system until very recently. It started giving signs of power supply frailty so I have just installed a bigger better faster NAS...

Hard Disk

StephenB
Dec 14, 2016
Tarkus wrote:

I actually can't find my model on the Netgear site: the plate on the rear says very clearly "ReadyNAS RND4000 v3";

This remains a point of confusion for a lot of people. Here we call your NAS an "NV+ v1". It uses a sparc processor; while the NV+ v2 uses ARM. There were some minor hardware revisions over it's life, you have hardware revision 3. There's more information on unit identification here: http://www.rnasguide.com/2012/01/09/how-to-tell-whether-i-have-a-duo-v1-or-duo-v2-or-nv-v1-or-nv-v2/

Tarkus wrote:

Regardless of the model number this unit is out of warranty by some years. Does anybody sell a suitable replacement power supply? The Netgear support site doesn't make it very easy to find out if it's possible for me to obtain one from them.

There are a couple, but they are expensive. Google for RND4PSU1 replacement. Here is one: http://www.evercase.co.uk/CompatibilityListReadynas.htm

There are cheaper options if you are willing to modify the pinout on a stock supply (or on an extension cable). This thread has more information: https://community.netgear.com/t5/ReadyNAS-Hardware-Compatibility/Inexpensive-power-supply-replacement-for-legacy-4-bay-Readynases/m-p/1016241#M13476

If you are getting rid of the NV+ after you migrate the data, pretty much any ATX supply (with an extender cable) will do, since it doesn't need to fit inside the case.

StephenB

Guru - Experienced User

Dec 18, 2016

Sounds like a good summary. I'd add that if you are planning to retire the ReadyNAS after you get the data off, you can use pretty much any ATX supply with a 20-pin extender (doing the pinout mod on the extender). Just keep the supply outside the case.

If you want a picture of the pinout change, there's one here: http://www.readynas.com/download/archive/pdf/ReadyNAS_PSU_pinout.pdf

cleantone

Tutor

Dec 18, 2016

Yes, I agree. I too have a "NV+ adapter" made from a 6-inch (15 CM) ATX extension cable. This tool provides an efficient way to re-establish emergency operation. Its also a quick way to test and find out if there's more wrong than just the PSU - if the adapter / ATX PSU combo still won't start up your good ol' NV+ there's not much point in going further. At that point I'd declare an ailing NV+ dead and reach for my working spare to do data recovery if needed...

In electronic terms, any working NV+ is very, very old. Please plan accordingly.

But yep, if the PSU is all that's wrong, & when an NV+ PSU bites the dust, using the adapter you can quickly and [fairly] easily plug in pretty much any ATX PSU & see if it will get the NV+ started up... this will require running the NV+ with its case open and its cooling fan / back plate assembly detached. An emergency data recovery mission only.

Sandshark
Sensei - Experienced User
Dec 19, 2016
The ITX supply I modified didn't need the tray modification, so I guess that depends either on the supply manufacturer or on the ReadyNAS model. Mine was for an NVX. Since the orignal Infrant units had the power supply fan, the NVX may have been orignally designed to accept it.

Here is an important thing that I wish I could add to my previous post on the conversion, but that thjread is now closed. Do not get a supply that has two 12V rails. The two should never be ganged together, and you want all the juice in the one that's connected both because you need it to spin up 4 drives and because running one with no load can create regulation issues with the other busses.

The small fan on a standard ITX supply can be annoying because its small size results in a high pitch. But it's best not to disconnect it. I see that the UK supplier has moved to one that has the fan on the other end, which probably reduces the noise. I could only find one supplier making an ITX supply with the fan on that end, and it was much more expensive than others.