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A1200 Power Pinouts / ATX PSU / Molex Mod.
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Topic: A1200 Power Pinouts / ATX PSU / Molex Mod. (Read 5783 times)
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Arptastic
Newbie
Join Date: Dec 2009
Posts: 3
A1200 Power Pinouts / ATX PSU / Molex Mod.
«
on:
December 20, 2009, 11:41:44 PM »
Hi Guys,
I'm sure this has been done many times before - this is my take.
After sitting in a box for quite a few years got the old machine out but couldn't find a PSU, so had a google round and found this:
http://www.ianstedman.co.uk/Amiga/amiga_hacks/Amiga_Power_supplies/body_amiga_power_supplies.html
- which is an awesome page with all the detail needed.
I decided to put together a simplified graphic, it's not end-to-end but covers the important points.
Low quality -
http://files.dustify.net/amiga/A1200-ATX-PSU-Low.jpg
High quality -
http://files.dustify.net/amiga/A1200-ATX-PSU-Full.jpg
The high level process goes something like:
Take system apart down to motherboard
Solder molex socket onto motherboard
Strip wires on ATX PSU, attach to molex plug
Attach ATX PSU-ON wire (green) to ground
Try it
Increase size of 'Power' opening on case
Put it back together
I realise that this is not most ideal or aesthetically pleasing way of doing this but it's easy to do and hope the information will be useful generally.
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Arptastic
Newbie
Join Date: Dec 2009
Posts: 3
Re: A1200 Power Pinouts / ATX PSU / Molex Mod.
«
Reply #1 on:
December 22, 2009, 08:16:27 PM »
Thanks for the responses guys.
delshay:
a VERY good point RE:
not using an unmodified PSU / molex plug.
Also, nice one on passing straight to the floppy, is it worth doing this on any other parts (HD, PCMCIA, 150-pin etc.) ?
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Arptastic
Newbie
Join Date: Dec 2009
Posts: 3
Re: A1200 Power Pinouts / ATX PSU / Molex Mod.
«
Reply #2 on:
December 22, 2009, 10:48:34 PM »
Hah, great response - you clearly have a good understanding of this!
Unfortunately my A1200 is totally stock except a 2.5" IDE disk, although I am looking at expanding to an 040/060.
Will the lines still be supplied without an expansion card? - If this is the case I can at least go round with the meter and check the key points.
Slightly off-topic question: Is there a specification for the trapdoor expansion / pin-outs available - I have had a google but can't seem to find anything - I am interested to know how the accelerators / memory expansions operate - would also be able to find those 0v and +5/12 lines
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