power supply

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Posts: 3
Joined: Sat Jun 09, 2012 7:01 am

power supply

Post by hopeless » Tue Jan 29, 2013 11:21 am

Please could some one help I am trying to make a desk top power supply from a pc power supply but I can only get 5v the rest of the colours like yellow at 12v do not work.
Thank you for any help, Bill

Posts: 21
Joined: Wed Jul 25, 2012 7:58 pm

Re: power supply

Post by Biomed » Tue Jan 29, 2013 8:49 pm

Have you shorted the green wire to any black on the 20/24 Pin ATX connector to turn the power supply on?

The +5V you are measuring is probably the +5VSB rail that's present all the time.

If it still doesn't work it may need a small load on the +12V rail, a HDD usual does the job.

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