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Power supply to BT home hub
John G - 1/7/16 at 07:40 AM

My power supply to my home hub went pop the other day. I have a 12v power supply but with a higher current output, would it be ok to splice my old plug on to this or would the higher current damage the hub?
Need to use it before the new plug arrives!
Thanks John

David Jenkins - 1/7/16 at 08:23 AM

The home hub will only take as much current as it needs - the only difference is that the new power supply can supply more current if the hub takes it.

The only requirement is that the voltage is identical, and the current capacity is equal to, or greater than, the old power supply. However, make ABSOLUTELY sure that the polarity is the same when you switch the connectors, or you'll let the magic smoke out if you get it wrong.

[Edited on 1/7/16 by David Jenkins]

nick205 - 1/7/16 at 09:14 AM

As above the fact your PSU can deliver more current doesn't mean it will unless asked to. Provided the voltage and polarity are the same you should be fine using it. If you have a multi-meter it's worth checking the polarity carefully before connecting it tom avoid damaging the hub itself.

John G - 1/7/16 at 10:19 AM

Many thanks for the replies. I have been looking around the net and it seems that the inner connection on the lead is the positive

David Jenkins - 1/7/16 at 11:42 AM

That's the usual way - but not guaranteed!!!

gremlin1234 - 1/7/16 at 04:42 PM

quote:
Originally posted by John G
Many thanks for the replies. I have been looking around the net and it seems that the inner connection on the lead is the positive
it should be marked on the bottom of the failed supply.
usually a minus sign on the left, linked to an outer circle, and a central blob linked to a plus sign.

which version of the hub is it? certainly hh5a is centre positive, as is hh3b

ste - 1/7/16 at 07:25 PM

Just call them up and ask for a new one

gremlin1234 - 1/7/16 at 07:30 PM

quote:
Just call them up and ask for a new one

quote:
Need to use it before the new plug arrives!