ATX psu, shorting the GREEN & BLACK to make a TIMER?

  • Thread starter Thread starter Reza
  • Start date Start date
R

Reza

Hello everyone and sorry for the confusing subject line, did'nt know
how else to make it short.

I need to power on my PC (PII ATX) on a daily basis at 9:00 AM to
11:00 AM and from 5:00 PM till 8:00 PM,
(note that I do not want to leave the PC on all the time or to suspend
or hibernate the PC)

Microsoft Schduler and a small batch file takes care of the shutting
down part, but for the automatic turning on part I think I have no
other choice then to use a of the shelf timer device.

I checked my bios and unfortunatly I don't have an option to turn the
power on after a power failiar, so in order to use a timer to give the
PC power at those times and power on the PC, I belive,as I have read
on these groups, is to short pin 14, the green wire with the black
wire.

My questions:

1. Do I just stick a paperclip and short the two wires as the cable is
connected to the MB? ... and leave it there for good?

2. When the computer is turned on this way, can it be normally shut
down again? whether by a user (Start > Shutdown) or batch file? wont
the PC boot up again since the two wires are shorted out?

3. I'm not really satisfied as I'm doing the right thing here, am I
doing something wrong, is there a much easier option that I'm missing.


Thank you very much for your time and sorry to have made a long post.

Bob.
 
Hello everyone and sorry for the confusing subject line, did'nt know
how else to make it short.

I need to power on my PC (PII ATX) on a daily basis at 9:00 AM to
11:00 AM and from 5:00 PM till 8:00 PM,
(note that I do not want to leave the PC on all the time or to suspend
or hibernate the PC)

Microsoft Schduler and a small batch file takes care of the shutting
down part, but for the automatic turning on part I think I have no
other choice then to use a of the shelf timer device.

I checked my bios and unfortunatly I don't have an option to turn the
power on after a power failiar, so in order to use a timer to give the
PC power at those times and power on the PC, I belive,as I have read
on these groups, is to short pin 14, the green wire with the black
wire.

My questions:

1. Do I just stick a paperclip and short the two wires as the cable is
connected to the MB? ... and leave it there for good?
Click to expand...
If you do this, your motherboard has no control over the power supply
2. When the computer is turned on this way, can it be normally shut
down again? whether by a user (Start > Shutdown) or batch file? wont
the PC boot up again since the two wires are shorted out?
Click to expand...
No, no, not applicable.
3. I'm not really satisfied as I'm doing the right thing here, am I
doing something wrong, is there a much easier option that I'm missing.
Click to expand...
What you need is some kind of one-shot relay that's connected in
parallel with the case momentary push button power switch. When your
timer applies power to the relay, its switch contacts closes for about
a second to turn on the computer.
 
Hello everyone and sorry for the confusing subject line, did'nt know
how else to make it short.

I need to power on my PC (PII ATX) on a daily basis at 9:00 AM to
11:00 AM and from 5:00 PM till 8:00 PM,
(note that I do not want to leave the PC on all the time or to suspend
or hibernate the PC)

Microsoft Schduler and a small batch file takes care of the shutting
down part, but for the automatic turning on part I think I have no
other choice then to use a of the shelf timer device.

I checked my bios and unfortunatly I don't have an option to turn the
power on after a power failiar, so in order to use a timer to give the
PC power at those times and power on the PC, I belive,as I have read
on these groups, is to short pin 14, the green wire with the black
wire.

My questions:

1. Do I just stick a paperclip and short the two wires as the cable is
connected to the MB? ... and leave it there for good?

2. When the computer is turned on this way, can it be normally shut
down again? whether by a user (Start > Shutdown) or batch file? wont
the PC boot up again since the two wires are shorted out?

3. I'm not really satisfied as I'm doing the right thing here, am I
doing something wrong, is there a much easier option that I'm missing.


Thank you very much for your time and sorry to have made a long post.

Bob.
Click to expand...

I think you need to reconsider leaving it on, or replace it with one
having bios options for turning on multiple times per day.. offhand I
don't recall any that support turning on MULTIPLE times per day.

A paperclip is not a secure connection. It should be fixed,
semi-permanent, either crimped, soldered, etc, but this is not to
encourage your quest, it's better to leave it on. If you just need
file access then consider an online storage provider (in cheapest
terms that might be a website host).


Dave
 
Reza said:
Thank You both for your fast and kind answer.

Well I went ahead and put the paperclip in there and no luch
unfortunayly, the PSU stays on alright, but the damn computer still
dose not come on untill I push that freaking button.

Do you think if I update the Bios, then some new Power management
features would be added?

I resigned to leaving it on 24/7 and used a small utillity to suspend
it the rest of the times, but I just feel that even with suspend, I'm
actually leaving the whole thing on.
Click to expand...

I might have missed it, but WHY can't you just leave it running 24/7?

Leave the monitor off and let the hard drives sleep after some non-use and
the machine should be pretty quiet.
 
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