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Inexpensive power supply replacement for legacy 4-bay Readynases
This was posted as a reply to another message, but is reposted here for easier searching. I have now confirmed that a mini-ITX, aka Flex ATX, supply will work as a replcement for the NV, NV+ (v1)...
One very important thing I somehow left out and just noticed:
Unless you want to drill holes in the chassis for the fan to exhaust, you need to mount the supply about 1/2 inch from the original location, away from the rear of the case. Aluminum duct tape works well for that. Some air will get through the AC cord hole, but that doesn't seem to make it run too hot. If your results vary, you could use tape or foam to seal around it.
But the main reason I wanted the thread unlocked is for two very important things:
First, I have found that many 250W and up supplies and all those that are "80 Plus" rated have two 12V busses (labeled 12V1 and 12V2). Do not get one of those. Though one bus may be rated with enough current to handle the entire NAS, leaving one bus without a load can be problematic. And you absolutely should never tie the two together.
I have also found that Amazon now sells the (unmodified for NAS use) same power supply as the one in my NVX, a Seventeam ST220FUB, so the top cover can be swapped and the fan removed. A Kentek KT-FATX250, also available on Amazon, is cheaper but with a higher current rating and a close enough fit for the cover swap, and others may be as well. The first one I got made by FSP Group was not able to have the cover swapped because the screw holes didn't line up. I suppose you could use the aluminum tape to hold on the orignal cover instead of mounting the supply with it.
I'm going to mark this as a solution so it shows up immediately after the original.
Just want to add...
You can get a short 20-pin extension cable quite inexpensively, and rewire that. If you're feeling uncertain about that step, it ensures you won't wreck the connector on the supply.
I've also attached the pinout pdf to this post. The readynas archive links are starting to get tempermental.
Stephen, can you confirm the Pro 4 uses the same pin-out. I assue it uses the same backplane as the others and thus must use the same pin-out, but I've never owned one. It would be great if somebody can confirm.
Sandshark wrote:
Stephen, can you confirm the Pro 4 uses the same pin-out. I assue it uses the same backplane as the others and thus must use the same pin-out, but I've never owned one. It would be great if somebody can confirm.
I don't have pro-4 either, so I can't confirm this for you. Hopefully someone from Netgear can.
Many thanks to both of you for taking the time to post your info and suggestions.
I'm away from home working currently but will be able to act on suggestions next week when I'm back home.
I'm thinking that:
- first effort would be to swap in NVX drives for those in my Ultra 6 (numbering them carefully!) to copy off the files not covered by the previous backup
- if this fails then I will look to try out the power supply options again as described above
If I am able to extract the remaining data in the first step then it may make more sense for me to bring forward my plan to upgrade the NVX to a newer model rather than repair it. I do hate to let potentially useful hardware go to waste though!
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