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Lighting LED problem: Question re Power Supply

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ed12:

here
Orange    +3.3 V    1    13    +3.3 V    Orange
+3.3 V sense    Brown
Orange    +3.3 V    2    14    −12 V    Blue
Black    Ground    3    15    Ground    Black
Red    +5 V    4    16    Power on    Green
Black    Ground    5    17    Ground    Black
Red    +5 V    6    18    Ground    Black
Black    Ground    7    19    Ground    Black
Grey    Power good    8    20    Reserved    N/C
Purple    +5 V standby    9    21    +5 V    Red
Yellow    +12 V    10    22    +5 V    Red
Yellow    +12 V    11    23    +5 V    Red
Orange    +3.3 V    12    24    Ground    Black

    Pins 8, and 16 (shaded) are control signals, not power:
        Power on is pulled up to +5 V by the PSU, and must be driven low to turn on the PSU.

ed

Fat-Tug:

You guys are geniuses.  Working great after shorting the pins.  Thanks so much!

frynturn:

I fell for this noob mistake too and was pleased when I saw you ask it as I knew the answer :P  Who would have thought a PSU would actually have to be plugged into a computer to work??

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