NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Power supply failure RNDU4000
I have just got a problem with my RNDU400 Ready Nas. It goes on for 5-10 seconds and then die, so i guess it´s something with the power. Or if someone had the same problems and have any tips to solve...
PatrikLindqvist wrote:
I have just got a problem with my RNDU400 Ready Nas. It goes on for 5-10 seconds and then die, so i guess it´s something with the power.
You could try removing the disks (and labeling by slot), and then powering up the NAS. If you see the "no disks" status, that would give you some assurance that the core of the system board is ok. Note that if you don't see that, then it could be the PSU, but it might be something else.
It is possible to replace the supply, but you do need to modify the pinout (or purchase one that is already modified). https://community.netgear.com/t5/New-ReadyNAS-Users-General/Power-supply-replacement-Ultra-4/m-p/1125093#M20504
Netgear doesn't sell spare parts, so you'd need to get a third party supply.
PatrikLindqvist wrote:
if it´s possible to buy a newer one and then put the disks in and start up again (the content needs to be intact though ;). Any help or tips would be very appreciated.
If you get a new x86 OS-6 ReadyNAS (RN420 series or better), then you can temporarily mount your disks in it, and offload the data. This is mounted read-only. After you copy off the data, you'd complete the setup - which will reformat the disks, so everything on them would be lost. https://kb.netgear.com/29957/ReadyNAS-Migrating-disks-from-RAIDiator-4-2-to-ReadyNAS-OS-6-x86
Note that the failure could have damaged the array - if that happened, you'd need help from paid support (data recovery). Or alternatively find a way to connect your disks to a Windows PC and use RAID recovery software. https://kb.netgear.com/69/ReadyNAS-Data-Recovery-Diagnostics-Scope-of-Service
PatrikLindqvist wrote:
(the content needs to be intact though ;). Any help or tips would be very appreciated.
RAID isn't enough to keep your data safe - the best way to do that is to have at least one copy on another device. So I do strongly recommend that you invest in backup in addition to replacing/repairing your NAS.
USB backup is cost-effective (and some cloud services will let you back up your NAS network shares). If you replace your NAS, then you could look at replacing the power supply, and re-purposing it as a backup.
Thanks Stephen for a very nice and thourough reply.
I did try to remove the disk and power it up again but same thing, it run only for 4-5 seconds and then just died. So it would not be possible to see if the PSU is faulty to see if there is any indication for "no disk".
Any idea if this could be more related to the power supply and maybe rule out PSU problems?
I will look into more of your points very soon.Thanks again for your kind reply!
I´m sorry for my incompitent reply about PSU meaning power supply unit ;). I´m not so familiar to the term as im Swedish, i thought it was the motherboard or similar.
Any suggestions to rule out the PSU or that the PSU is the main problem regarding the 4-5 second abrubt shutdown?.
I will continue to search for another newer NAS to try to switch the disks.
PatrikLindqvist wrote:
Any suggestions to rule out the PSU or that the PSU is the main problem regarding the 4-5 second abrubt shutdown?.
If you have an old ATX power supply, you could get an extension cable and modify the pinout in the cable. Then temporarily connect it to the NAS and see if it stays up. But that assumes that you have such a supply on hand.
Perhaps Sandshark will have a couple of simple troubleshooting steps.
It does sound like a hardware problem.
The failure of one of the power supply voltages could cause that behavior. A faulty thermal sensor could, too, with the NAS protecting itself from what it believes to be an overheating situation. It's unlilkey a real overheat problem happens that quickly. I'm not sure if a bad fan (or speed sensor for it) can also do that, but I don't belive so.
The first thing is to assess how much time and money you want to put into that old, somewhat slow NAS. If you feel it's worth it, the use of an external power supply with an adapter cable is about the only thing you can do easilly. There is a TTL level UART port you can connect a terminal to with the right adapter and see if you see any BIOS messages, but that starts to get a little complicated. Beyond that, there is not much that can be done since Netgear has not provided schematics.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
