computer won't power up

[James Knott]

Madison Kelly wrote:
> Madison Kelly wrote:
>> Unplug everything from the PSU except say an optical drive (or an old
>> hard drive you don't care about). This is because the PSU needs a
>> load. Next, find pin 13 on the main header; This is usually the sole
>> green wire, often a smaller gage then the rest. Short this to ground.
>> Now flip the switch on the back of the PSU to connect the mains and
>> see if it powers up. If it does, your problem is not the PSU. If it
>> doesn't, the PSU is dead.
>>
>> Pin 13 is the Power Good Line, this is normally shorted to ground by
>> the system board/CPU when the initial ripple in line voltage has
>> settled to protect the rest of the devices from damage. Hence why you
>> don't want anything sensitive plugged in while doing this test.
>>
>> Madi
>
> Looks like I meant pin 14. :(
>
> http://pinouts.ru/Power/atxpower_pinout.shtml

Yeah, grounding a ground lead usually doesn't accomplish much.  ;-)

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