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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: jonnyboy on March 28, 2004, 12:25:39 PM

Title: Powering an A1200 using a PC power supply
Post by: jonnyboy on March 28, 2004, 12:25:39 PM

Calling anyone who's an expert in power supplies...

I bought a PC power supply from Eyetech in November 2002, which came with instructions as how to develop a version for the Amiga (I needed to butcher an old Amiga power supply to get the Amiga connector off it).
The problem is, it never worked. Plugging in the power cable had no effect whatsoever. I mentioned it to Eyetech and they apologized, saying that it was the wrong supply and told me to send it back, but I never got round to it and now they never reply when I ask them about it...  :-(
Anyway, I'm wondering if the power supply is actually broken, since might it need connecting to a switch somehow? The unit has no switch on itself, but I'm wondering if that's what's stopping it from working.

If anyone can shed light on this, I'd be really grateful!

Title: Re: Powering an A1200 using a PC power supply
Post by: delshay on March 28, 2004, 02:27:33 PM

some power supply only come alive when you connect something to the 5v rail..new tpye of power supply have a wire on the big connecter which needs to be loop to earth i forgot which colour..but i will have a look at mine..


you also need to know which wires go where..

Title: Re: Powering an A1200 using a PC power supply
Post by: AltRN8 on March 28, 2004, 04:03:27 PM

Check here:

http://www.ianstedman.co.uk/Amiga/amiga_hacks/Amiga_Power_supplies/amiga_power_supplies.html

It explains how a PC ATX power supply works (which is probably what you got) and how to build a circuit to use it.

Be careful and good luck.