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Thread: PC power Supply

  1. #1
    300+ Forum Addict BlackWidow's Avatar
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    PC power Supply

    Cant find a exact solution to my problem in the search function I have two 350wat power supplies form old PC. I pluged them both in (they were working when pulled form PCs) but I get nothing from them Is there a trick to getting them to turn on when not plugged into a MB. Thanks

    Mike

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    300+ Forum Addict BlackWidow's Avatar
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    WHOO HOOO got it find it on a car stereo enthusists website. For anyone else who may not know on an ATX power supply simply jumper the green wire with any ground and bingo you have power.

  3. #3
    150+ Forum Groupie andarlite's Avatar
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    Look on the 20 pin molex connector.... there's a green wire (Pin 14)... signal name is "P/S On". You need to connect that to GND (any of the black wires).... then turn the power supply on. Should fire up.

    Regards,
    Henry

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    300+ Forum Addict BlackWidow's Avatar
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    Thanks for the reply I think i found it as you were writing thanks again.

    Mike

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    300+ Forum Addict ak49er's Avatar
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    May be Different

    This is very useful, I thought that you had to add a 10 ohm resistor somewhere? OR is this for a different type of PS?

  6. #6
    300+ Forum Addict BlackWidow's Avatar
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    Yes i did read about that but it turns out that some power supply's will not turn on with out a load. That is when you would use the 10ohm resistor to put it under load. At least thats what i gathered from the article i read. I actually was able to power it up and hooked up a 12 volt map light that i had laying around it woked perfect. I plan on using 12 volt bulbs for backlighting and i can use the same power supply for LEDs sweeet and it turns out I have 2 350W and 1 300W power supply's just laying around.

  7. #7
    Tim
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    This setup works very well for me. I use it to power the Photon interface boards.

    http://web2.murraystate.edu/andy.bat...owerSupply.htm

  8. #8
    300+ Forum Addict BlackWidow's Avatar
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    Thanks for the link thats some good info. I think its a great idea to use the power supply's because all of us computer nerds probably have some just laying around dying to be used.

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