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Thread: Converting AT PS to ATX PS? How to?

  1. #1
    Maximum Bitrate
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    Question Converting AT PS to ATX PS? How to?

    I have seen a few posts about converting a AT power supply to a ATX power supply, but didn't pay much attention, thinking that I would never have to do it. Well guess what... I do. I am totally broke and want to build a computer for my brothers birthday. I have all the parts just laying around, except an ATX PS. I have a working AT PS and a burned out ATX PS. I figured I could use the connectors from the burned out one. I guess the posts I saw were so long ago that Moon deleted them, because nothing came up when I searched. Does anyone know of a article, or can give descriptive directions on how to do this?

    TIA
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  2. #2
    Constant Bitrate
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    It's not practical. Just buy an ATX power supply--you can get them for under $20, shipped. Anyway, if you built that system in your sig, I'm sure you can afford the $20.

  3. #3
    Maximum Bitrate
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    Honestly I have $5 to my name. I am working on starting my own business, and have bills piling up the whazoo! So any help would be nice.
    http://www.mp3car.com/usersites/Maveric/ M.A.V.I.C. System
    Asus MB, PII 266, 192 MB Ram, 6.8" LCD, 6 Disk CD-ROM, 21 Gig HD, All-in-Wonder Video w/ TV Tuner, Irman, Windows ME, Winamp, Cobra III -- All in a custom acrylic case.

    http://www.mp3car.com/usersites/listings/ MP3car Listings - Please add to it! :)

  4. #4
    FLAC
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    Cool

    LoL.... I think we all also have bills to pay u know. Anyway i know what u mean.... I have had few ppl come up to me wanting me to build them a system running C3 on it. Anyway ever since i built mine, they NO longer make AT style MB and even if u can find them in due time they will all die out (prolly in 1yr). Now every thing is ATX not to mention that VIDEO cards are no longer PCI. I prolly say 90% of them these days are AGP (damn those game players). But AGP is not really my problem. The ATX is...and seeing that Jeff and PressLab seems to have a solution and I am clueless as to what they hell they are talking about, i am just waiting patiently on a solution from either one of them or maybe Arise computer will come out with an ATX version which in that case i will jump to. I have in all my setups an ARISE psu that even when i made so many damn mistakes when i started out, the PSU NEVER died....turns out they had a fail safe feature and PSU has been working fine since day one. And my current box has so much gadget in that i sometimes laugh at these guys with inverter ranging from 150-800watts just to power up their box. Mine is only 65 watts and i have more stuff than their box....go figure. anyway enough ranting.... Jeff, PressLab, i hop you guys are listening, i want solution before fall damnit If YOUR psu can power up my box then i am a happy camper but mind u i need it for an ATX mb not AT style.
    abcd-1
    Author of CobraI,II,III and now CobraIV.
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  5. #5
    Constant Bitrate
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    As I said, it's not really possible. Really, there's not much you can do. AT and ATX power supplies are just too different for an AT->ATX conversion to work (though ATX->AT is probably not that big of a deal). ATX power supplies provide a constant +5VDC to the computer, even when it is off, and it's by basically running that current through the motherboard and back into the power supply that it turns on (well, that's how I think it works, anyway). AT supplies have an on/off switch that cuts all power to the system. ATX power supplies provide +3.3VDC, +-5, and +-12 (plus the constant +5), whereas AT supplies only provide +-5 and +-12. Okay--<i>maybe</i> you could convert one to the other. But it would likely cost three times as much as a good ATX supply. Not only that, but if you **** it up, there's a good chance you could toast the rest of the system as well.

    <i>But</i> I'm not entirely without advice here. See if there's a local .forsale newsgroup in your area or any computer publications with classifieds ads or whatever and post a WTB ad for an ATX power supply. I'm sure you could actually find one for $5, or even someone willing to swap your AT supply for their ATX supply.

  6. #6
    FLAC
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    Wink

    but if you **** it up, there's a good chance you could toast the rest of the system as well.
    I couldn't agree more with you here and this is why i am waiting to see who has a better solution.
    abcd-1
    Author of CobraI,II,III and now CobraIV.
    You can contact me on AOL instant messenger....nick is cenwesi or cenwesi3

  7. #7
    Retired Admin Aaron Cake's Avatar
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    Cool

    It will cost you more than the price of a new ATX supply to convert. I have no doubt that you can find ATX supplies for $5 and under with a litte digging...
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