12v power supply for a wireless router

CBW · 19 Oct 2019

Good morning,

I have searched on the forum, but can’t seem to find what I’m looking for. I have a wireless router, and the power supply to it is 12v 2a, and the mounded end has snapped. Am I right in thinking I can just purchase the same like for like?

Harry Bloomfield · 19 Oct 2019

Any 12v DC power supply, with at least 2 amps of output, with the correct plug and correct polarisation will work absolutely fine.

They are quite common amongst other brands of router..

CBW · 19 Oct 2019

Any ideas how I measure the moulded plug end, int diameter or external?

Harry Bloomfield · 19 Oct 2019

You can compare the external diameter by comparing with your old plug. The internal can be checked with a bit of copper wire from twin and earth.

Other way is to simply plug it in (if it fits the rest of the spec.) and try it.

mattylad · 19 Oct 2019

try using a ruler.

CBW · 19 Oct 2019

mattylad said:
try using a ruler.

I will, just trying to search online but need to know the size, but don't know if it relates to internal or extant diameter.

Harry Bloomfield · 19 Oct 2019

The Novice said:
I will, just trying to search online but need to know the size, but don't know if it relates to internal or extant diameter.

You cannot use a ruler, they are far too course for such a small diameter. All wall warts are normally marked with the voltage, max current and polarity. Don't you have an old modem power supplies? I must have around a dozen old modems and power supplies here, various models and makes, all use the same PSU type.

Do a search in ebay for a power supply for your particular modem, it might give a clue as to the correct plug type.

CBW · 19 Oct 2019

I have some, and some replacements I found from maplin, but all for an older modem which is a 1A rated, not 2A which is what I need.

Harry Bloomfield · 19 Oct 2019

The Novice said:
I have some, and some replacements I found from maplin, but all for an older modem which is a 1A rated, not 2A which is what I need.

The likelyhood is that 1 amp will be adequate, if it matches, try it. If it is not adequate, the modem will misbehave.

AndyPRK · 19 Oct 2019

if you know what brand the router is, just get a replacement second hand router and pSU off ebay

rsgaz · 19 Oct 2019

Be aware, 5.5mm is a very common size for the outside diameter of a DC jack, but in someone's infinite wisdom years ago, they decided to make the central pin either 2.1mm OR 2.5mm.

Tricky to measure with calipers, so I keep a 2.5mm drill bit on hand when meddling with DC jacks(for CCTV mainly). Put the smooth end in to the jack, if it fits, it's 2.5, if it won't, it's 2.1mm.

edit: In fact, keep metal calipers well away from DC jacks, unless you unplug it from the wall first!!!

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

12v power supply for a wireless router

Similar threads