Dying Switch power

[Enverex]

I have had this switch for a few years, and the transformer/plug on it has always made an annoying buzzing noise, but now the noise has got louder and more high pitched, and it is hurting my ears.

It's pretty much an emergency as otherwise I won't have networking in the attic, meaning the WAP, this PC and Laptop don't have net access, and neither will my moms laptop (=annoyed parents) and I believe the transformer is dying.

So the question is, can you pick up replacement transformers anywhere in the UK for specific ratings? I.e. this Switch needs 3.3v DC @ 800mA. I have seen the variable ones, but I don't know what they do about Amps. Would those work?

Cheers,
Ex

[Geeky1]

if the original PS put out 3.3vdc @ 800mA, the replacement PS needs to put out 3.3v @ at least 800mA.

You got an extra ATX PS sitting around?

[Enverex]

Yeah. The ATX connector itself has a few fried couplings, but the PSU itself and all the other connectors are fine.

Why? What do you have in mind.... (it's just suddenly occured to me that I can't hear it at all now...)

[Geeky1]

Snip a +3.3v wire and a ground wire from either the 6-pin or 20-pin connectors, remove the barrel connector on the transformer, and solder the wires to it. Make sure to test it before you solder to make sure the polarity is correct, though.

[Enverex]

Problem with that though is two-fold. Firstly, the PSU is going to be even nosier than the current transformer (due to the fan) and secondly.. how would I turn it on? (though I believe there is a "connect this to this" method).

[Geeky1]

Connect the green wire on the ATX connector to one of the ground wires on the ATX connector. Solder a 5 ohm, 5w+ wirewound resistor to one of the +5v lines and one of the ground lines, a ~6 ohm 10w+ wirewound resistor to one of the +12v lines and one of the ground lines, and you're done.

[Enverex]

Hmm.... very messy though. Will be useful for future ghetto things though. Cheers Geeky.

Though does anyone know where I can actually buy High amperage transformers in the UK?

[Geeky1]

Actually, it's useful for LAN party rigs. Take the switch out of the case, wire it up to the comp's PS, put it in the comp, and you have a rig with an integrated switch.

[edcentric]

Radio Shack or the equiv.
They sell plug in transformers at almost any rating you want. Don't worry about hte current rating too much.
I doubt that yours is going to die. Just drive you nuts. The transformer itself is just held in place by a couple of mellted plastic dots. They have worked loose and the transformer is vibrating. I have had some big ones (80V 40A) that vibrated equipment. If it really bothers you break open the case and glue the sucker down.