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Business Smart Hub 3 power supply

bobm4 — Sun, 28 Dec 2025 13:43:07 GMT

Had an interesting fault with my full fibre. The Smart Hub 3 suddenly refused to connect. Swapped it out with a new Smart 3 hub and had the same issue. I was being lazy and using the same power supply. However when I swapped to a a new power supply I got a connection straight away - with both Hubs.

So the original power supply has clearly gone faulty. After trying calling and going round in circles with the AI bot and the automated fault checker I am getting nowhere trying to order a replacement.

Anyone any idea?

Re: Business Smart Hub 3 power supply

imjolly — Sun, 28 Dec 2025 13:57:51 GMT

as a business user you may get more help from business forum as this is a residential forum https://business.forums.bt.com/

Re: Business Smart Hub 3 power supply

chrisjp — Sun, 28 Dec 2025 18:07:49 GMT

If you already have a replacement power supply, why do you need to order another one?

Re: Business Smart Hub 3 power supply

bobm4 — Sun, 28 Dec 2025 18:11:00 GMT

Because I borrowed one from a neighbour who is awaiting their installation to resume after issues on the original appointment.

Re: Business Smart Hub 3 power supply

WSH — Sun, 28 Dec 2025 18:49:07 GMT

Probably best to source your own.

You just need the same size plug*, same voltage and at least the same current output.

Just keep the old unit, so that when they ask for the hub back you can send them that one.

(*Not sure the size of the plug? Use a set of metric drill bits. If a 3.0mm doesn’t fit, try a 2.5mm. If that doesn’t fit, it is more than likely a 2.1mm).