Power supply for Netgear NAS

[bambam]

Hi

Found out that our Netgear ReadyNAS had no lights on this morning - there are normally 1 or 2 green ones and blue one. Blue indicates power.

Tried to switch it on and long story short, it seems that the culprit is the power brick. Found out by taking the hard drives out (just in case) and trying a different power brick from an old laptop - fired up straight away. The other half of the power supply (the kettle lead) works fine.

So, I'm happy to buy another power brick, but thought I better check if the specs matter too much? I've attached a picture of the old one. The one from the old laptop is different in terms on input and output specs.

I have another NAS system which I think I'll set up now as have been meaning to do it for ages, but want to check the old drives first. I have a 3TB drive for the new QNAP Turbo NAS, whereas in the Netgear NAS I had 2x1TB drives which were set to mirror.

Any pointers would be great. At the moment I think I'm going to leave it switched off just in case and when I do switch it on, I think I'll keep one hard drive out of it.

It's odd because I've never had one of these power bricks fail before.

Thanks

[Skier]

For the replacement power supply. As long as the input voltage will cover 220-240V and the output voltage matches you'll be fine. My Thecus N5200 Pro NAS power supply failed around 4 years ago and I couldn't get a replacement. It has run ever since on a standard small desktop power supply that sticks out of the back and would fail a PAT test on first sight. As it's extremely well hidden and only ever physically accessed by me I'm not concerned. The NAS itself has to be around 15 years old now so the next thing that goes on it will result in a complete replacement of NAS and all 5 drives - that won't be cheap!

[MB2]

The output voltage needs to be the same and the watts or amps the same or higher.

The NAS won't pull more power than it needs but wrong voltage will cause a problem if too high.

As a warning if you find an old PSU it is worth measuring the voltage if it is not from an IT box or similar as I spent ages troubleshooting a set up only to find that the 12V supply wasn't delivering 12V (was an LED light supply so it just was a bit dimmer than expected but wouldn't start the HDD caddy I was working on).

[Carlton-Browne]

I have a selection of 12v transformers from various dsl routers/NAS/WiFi print servers etc and find that they are all interchangeable.

[bambam]

Thanks chaps, very useful.

This is the info on the power supply that got the caddy powered up after I had removed the discs.

Not sure it will work properly as the output DC is 19V (as opposed to 12V for the original) and the amp rating is 3.42A (as opposed to 5A for the original).

I was going to put 1 disc back in today and connect it all back up, but having just had another look at the ratings on the substitute power supply, I'm not sure. Quick pic below:




Also, what do the symbols with + and - denote?

Thanks

[IAmATeaf]

I personally wouldn’t, depends on the internal circuitry of the NAS but there’s a big difference between 12 and 19v and maybe you can get away with for a short while but ...

[Skier]

I wouldn't use that power supply as the output voltage is rated at 19v at 3.42A against the Netgear original of 12v at 5A. The symbol you asked about - see below (a picture paints a thousand words):

[Mr Pointy]

I wouldn't risk a 19v PSU. Here's a couple of possibilites from Amazon:
https://www.amazon.co.uk/GOOD-LEAD-N.../dp/B07WHLCBDY

https://www.amazon.co.uk/UltraSlim-U.../dp/B00NWH1FTS

Apart from the voltage & current spec (12V & 5A for your case) There's aslo the tip size & polarity to get right. You need a center +ve tip but it's a bit trickier to know what size the tip should be - 2.1mm & 2.4mm are the most common & often it's not specified. I tried to find a multi-tip model but they are a bit scarce at 60W. Ther second one has a second adapter tip which might cover both bases..

[bambam]

I wouldn't risk a 19v PSU. Here's a couple of possibilites from Amazon:
https://www.amazon.co.uk/GOOD-LEAD-N.../dp/B07WHLCBDY

https://www.amazon.co.uk/UltraSlim-U.../dp/B00NWH1FTS

Apart from the voltage & current spec (12V & 5A for your case) There's aslo the tip size & polarity to get right. You need a center +ve tip but it's a bit trickier to know what size the tip should be - 2.1mm & 2.4mm are the most common & often it's not specified. I tried to find a multi-tip model but they are a bit scarce at 60W. Ther second one has a second adapter tip which might cover both bases..

Thanks for that. I thought the diagram was something to do with that.

Tip size is another issue - I have another power brick from an old laptop with the right output but the wrong tip. How do you measure the tip? I have a digital gauge to measure.

Thanks.

- - - Updated - - -

I wouldn't use that power supply as the output voltage is rated at 19v at 3.42A against the Netgear original of 12v at 5A. The symbol you asked about - see below (a picture paints a thousand words):

Thanks for that!

[bambam]

Found this one on Amazon which looks like a replacement...
https://www.amazon.co.uk/MyVolts-sup.../dp/B0047O60FO

And this one (which states the tip specs as 5.5mm * 2.5mm) - https://www.lps-gopower.org/12v-netg...rger-88797.htm

[Mr Pointy]

Tip size is another issue - I have another power brick from an old laptop with the right output but the wrong tip. How do you measure the tip? I have a digital gauge to measure.

It's generally the diameter of the center hole in the PSU plug (or the pin on the equipment). Sometimes the outer barrell diameter is quoted as well eg 5.5 x 2.5mm

Found this one on Amazon which looks like a replacement...
https://www.amazon.co.uk/MyVolts-sup.../dp/B0047O60FO

And this one (which states the tip specs as 5.5mm * 2.5mm) - https://www.lps-gopower.org/12v-netg...rger-88797.htm

Well, reviewers say they have used the first one on Netgear NAS so there's a good chance it will fit. At least with Amazon you can return it if it doesn't fit (or buy an adapter).