Main > Main Forum
Lighting LED problem: Question re Power Supply
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??