On Sat, 1 Jan 2011 06:53:23 -0800 (PST), n8ball
wrote:

I have a problem with my Optiplex 745 power supply, model H275P-01.

I printed out the ATX 24 pin pinout and whats odd is when I short the
pins to turn the unit on, its turns on ok.

Please note: (I do not know if this also applies to this
particular model) There are DELL PSUs around that use standard
plugs but with a slightly different wiring !

--
Kind regards,
Gerard Bok