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rowanmf's avatar
rowanmf
Follower
Nov 15, 2025

ReadyNAS RND-6A not booting ?

i have just been given an old 6 bay NAS , sticker on the bottom shows as per below.

 

no drives were in the cases / caddies , i have 2 old 500gb drives i have installed to see if i can get to the GUI . partitions have been deleted before intallation.

 

Ethernet ports are not showing as being active and i dont see an ip address being assigned on my router.

 

 

Front panel shows 

 

i tried following readyNAS reset instructions , power off , hold reset , power on . it just seems to do nothing . i presume i will need to re load OS or give it a proper reset ,possibly removing cmos battery ? maybe .

any assistance would be greatly appreciated.

4 Replies

  • StephenB's avatar
    StephenB
    Guru - Experienced User
    rowanmf wrote:

    i tried following readyNAS reset instructions , power off , hold reset , power on . it just seems to do nothing .

    Sounds like a failed PSU (even with the "ReadyNAS" on the LCD panel).

  • Agreed. Failing PSU most likely. Double check all cabling internally, but failure MOST common. There are replacements available occasionally on eBay. It is somewhat tedious to tear down and replace the PSU itself, but doable. Caution when taking apart... You WILL rip off the surface mounted capacitors on the backplane board if not careful when trying to maneuver and fish wiring out. You will also likely need a pair of pliers to grab and wiggle the three white colored Molex connectors free. (They always FEEL like they are welded in to the plastic sockets).

     

    As an aside, the PSU will often have bulged/failed capacitors as the source of failure, (about 2 out of 3 in my experience) the caps  CAN be replaced/resoldered with new but it involves high voltage and some danger and it is VERY tedious and annoying to try and repair. (From experience, I would suggest just buying a replacement (when/where available).

    • StephenB's avatar
      StephenB
      Guru - Experienced User
      Rottenweiler wrote:

      There are replacements available occasionally on eBay

      There are also some stock PSUs that can be used, but there is a small change you need to make to the connector.  Sandshark​ can help sort out if a particular option is suitable.

       

      Rottenweiler wrote:

      You WILL rip off the surface mounted capacitors on the backplane board

      Yeah, you do need to be very careful - particularly with the components on the bottom of the system board nearest the supply.

  • An RND-6A is better known as an Ultra-6.  Apparently, there are many like yours where Netgear failed to print the model name in that blank box.  The power supply for that model is a standard SFX form factor.  Some of those have an offset fan, so it's best to avoid those.  Most do not have the required 3 4-pin MOLEX connectors, so you'll need a SATA to MOLEX adapter (or two) or to transfer the 90° connectors from the old to the new.  The main 24-pin cable is too short on every one I've tried except those already modified for the ReadyNAS and require a 6-inch or so extension.  Although the original is a 250W supply, it delivers more +12V than most of that size, so you should go with a 350W or more.

     

    If you are in the USA, the one already set up for a ReadyNAS sold on eBay by KDM Power is usually the best way to go.  If you are outside the US, they are harder to find, and an Apevia SFX-AP500W is one supply that, after cable extension and connector transfer, I've found to work.  But there are other options.

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