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Thread: how do you force a power supply to turn on?

  1. #1
    Constant Bitrate
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    how do you force a power supply to turn on?

    Wihtout hooking up a DC-DC power supply to the mother board, and turning it on via wires frem the motherboard
    How can a power supply be hacked into starting?
    which pins do I have to jump on the harness that would have connected to the MB?

    thanks

  2. #2
    Neither darque nor pervert DarquePervert's Avatar
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    13 & 14.

    Search the forums for this and many other answers before you ask questions... You'll be surprised at the information you'll unearth...
    Have you looked in the FAQ yet?
    How about the Wiki?



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  3. #3
    Fusion Brain Creator 2k1Toaster's Avatar
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    If you connecting a desktop PSU into your motherboard, then it works like normal...

    just short the power pins (on the mobo), and on it goes. Those are the pins in the front panel header.

    You never told us what type of mobo, so I can't tell you exactly where those pins are, but look in the book.

    That is for: MOTHERBOARD ==> DESKTOP PSU ==> AC WALL PLUG

    If you want: MOTHERBOARD ==> DC-DC PSU ==> DESKTOP PSU ==> AC WALL PLUG, then strip the yellow and a black wire from the desktop PSU and connect the yellow to both the 12v constant and 12v switched, and then black to ground. On the ATX connector, find pin 14 (usually green) and short it out. As long as it is shorted, the PSU will be "on". Then use the switch on the back of the PSU for on and off.

    You say no DC-DC, so I assume you just want to power the first way. If so, then just plug and chug.
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  4. #4
    Neither darque nor pervert DarquePervert's Avatar
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    It's not like the question really makes any sense in the first place.

    Hint for the newbie: Details and properly worded questions will yield better answers, but only after you search first!
    Have you looked in the FAQ yet?
    How about the Wiki?



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  5. #5
    Constant Bitrate
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    Well I'm not connecting the power supply to a MOBO,
    I just wann rig it to start without a mobo,
    I want the regulated 12V and two 5V outputs for drives and accesories.
    my carputer is a laptop, so it has it's own power from a Lind dc-dc adapter
    thanks

  6. #6
    Fusion Brain Creator 2k1Toaster's Avatar
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    Well then just take the 14th pin (usually green) of the ATX connector and ground it (to the PSU, not chassis). Poof. It's on (as long as it is grounded).
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