[Lowfer] Deep Sleep PC

[Cliff Sojourner]

PS_ON# - # means active low - ground that line to turn on the power supply

On 2014-02-19 11:09, Peter Barick wrote:
> Hi Fellas,
>   
> I've tried all tips to date. but John's on the PS signal was untried to fore and I have something to say about it.
>   
> The pc is a 400MHZ box with a ATXPWR PS. It provides 3 conns. to the MB. The big one is 20-pin. Only 3 pins are new to me, this is from the MB manual:
> 1.  PS_ON#  <-- shows no voltage (unknown what the # means, not a footnote)
> 2.  PWR_OK  (did not probe)
> 3.  +5VSB
>   
> Therefor, if PS_ON# is the signaling line, I found no DC voltage.
>   
> -------------------
>
>>>> John Andrews <w1tag at charter.net> 02/19/14 10:02 AM >>>
> Peter,
>
> Dead battery on the PC? Also, I've seen power supplies that seem to produce all the voltages, but are not signaling the PC board that they are up and running.
>
> John, W1TAG
> --------------------------------
>
>
>> On Feb 19, 2014, at 10:53 AM, "Peter Barick" <pbarick at niu.edu> wrote:
>>
>> Hi Fellas, I've been out of LowFERing for a while . . .
>>
>> Well, so I thought I'd start things up a bit but hit a pc wall; The XP box would not come up -- nothing.
>>
>> By nothing I mean no output to the monitor or sign that it has booted. (I'm a retired IT guy and used to install business configurations.)
>>
>> Did many substitutions: Monitor to laptop, works. PS puts out 12, 5, 3.3V. Changed pci video card, reset many plugins, including RAM.
>>
>> Removed the DSL and game cards
>>
>> CD and floppy drives react to opening. Floppy boot disk, no reaction on boot.
>>
>> Substituted the HD, nothing.
>>
>> The one reaction: briefly the lights on the KB flash as the HD does its usual initial buzz.
>>
>>
>> Ideas ? . . . offers? ~)
>>
>>
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