Newly Built Computer Won't Stay On
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Posted by Robert Heiling on December 15, 2006, 7:51 pm
Please log in for more thread options > > Robert Heiling wrote:
> > > > > Since nobody else has mentioned it, I'll toss this out. Double-check your
wiring job in regard to the power-on and reset buttons and motherboard pins.
Your magic 4 second delay is exactly the effect you would get if power-off were being held down. > > >
> >
> > > > Bob Good answer--hitting the basics first. But you should warn him: > > if he got his wires crossed, he will have to remove his shorts. >
> Well, I've tried reversing the power on wires, removing the reset > wires, I wouldn't be comfortable with what you describe. Why don't you simply remove all connections to those 10 sets of pins -LED, Reset, Speaker, Power - All of them! Then briefly short the Power pins. If the behavior is still the same, then you've ruled those out. > removing and replacing the heat sink/fan, and moving the memory
> to a different slot, and there has been no change. I don't have spare > mbs, memory, or PSUs lying around, so I guess I'll go buy a power > supply first, and try that. > > Thanks for the advice, and keep it coming. But if it comes on and stays on, you'll know where to look for one problem. Bob | ||||||||||||||||||||||
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Posted by on December 16, 2006, 7:58 am
Please log in for more thread options Robert Heiling wrote: > jbruss@wi.rr.com wrote:
> >
> > OSbandito wrote: > > > Robert Heiling wrote:
your wiring job in regard to the power-on and reset buttons and motherboard
> > > > > > > Since nobody else has mentioned it, I'll toss this out. Double-check pins. Your magic 4 second delay is exactly the effect you would get if power-off were being held down. > > > >
> > > > > > > > > Bob Good answer--hitting the basics first. But you should warn him: > > > if he got his wires crossed, he will have to remove his shorts. > >
> > Well, I've tried reversing the power on wires, removing the reset > > wires, >
then
> I wouldn't be comfortable with what you describe. Why don't you simply remove > all connections to those 10 sets of pins -LED, Reset, Speaker, Power - All of > them! Then briefly short the Power pins. If the behavior is still the same, > you've ruled those out.
> > > removing and replacing the heat sink/fan, and moving the memory
> > to a different slot, and there has been no change. I don't have spare > > mbs, memory, or PSUs lying around, so I guess I'll go buy a power > > supply first, and try that. > > > > Thanks for the advice, and keep it coming. >
> But if it comes on and stays on, you'll know where to look for one problem. > > Bob I just located an older 20 pin PSU in my basement, but my mb needs a 24 pin. Is there any way to use this old PSU, just to see if it fixes the problem before I buy a new one? | ||||||||||||||||||||||
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Posted by Jan Alter on December 16, 2006, 8:13 am
Please log in for more thread options >
> Robert Heiling wrote: >> jbruss@wi.rr.com wrote:
>> >
>> > OSbandito wrote: >> > > Robert Heiling wrote: >> > > >> > > > Since nobody else has mentioned it, I'll toss this out. >> > > > Double-check your wiring job in regard to the power-on and reset >> > > > buttons and motherboard pins. Your magic 4 second delay is exactly >> > > > the effect you would get if power-off were being held down. >> > > > >> > > >> > > >> > > Bob Good answer--hitting the basics first. But you should warn him: >> > > if he got his wires crossed, he will have to remove his shorts. >> > >> > Well, I've tried reversing the power on wires, removing the reset >> > wires, >>
>> I wouldn't be comfortable with what you describe. Why don't you simply >> remove >> all connections to those 10 sets of pins -LED, Reset, Speaker, Power - >> All of >> them! Then briefly short the Power pins. If the behavior is still the >> same, then >> you've ruled those out. >> >> > removing and replacing the heat sink/fan, and moving the memory
>> > to a different slot, and there has been no change. I don't have spare >> > mbs, memory, or PSUs lying around, so I guess I'll go buy a power >> > supply first, and try that. >> > >> > Thanks for the advice, and keep it coming. >>
>> But if it comes on and stays on, you'll know where to look for one >> problem. >> >> Bob >
> I just located an older 20 pin PSU in my basement, but my mb needs a 24 > pin. Is there any way to use this old PSU, just to see if it fixes the > problem before I buy a new one? > Do you mean something like this? http://www.xpcgear.com/20to24pinatx.html But check to see if that old PS you found in the basement would have enough watts to power up your board if you had an adapter to fit it 20 to 24. -- Jan Alter bearpuf@verizon.net or jalter@phila.k12.pa.us | ||||||||||||||||||||||
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Posted by on December 16, 2006, 8:19 am
Please log in for more thread options > Do you mean something like this?
> > http://www.xpcgear.com/20to24pinatx.html > > But check to see if that old PS you found in the basement would have > enough watts to power up your board if you had an adapter to fit it 20 to > 24. > -- > Jan Alter > bearpuf@verizon.net > or > jalter@phila.k12.pa.us It's a 200 W PSU, but it should be enough to power the board with ease, right? I don't think I even have to hook up the drives to see if this fixes the problem. | ||||||||||||||||||||||
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Posted by Jan Alter on December 16, 2006, 8:35 am
Please log in for more thread options CPU - AMD|A64 X2 3800+ AM2 2x512K R
If the PS is decent I would be thinking at minimum of 300 w to power the rig with the processor you have. I'd be dubious that you could make a reliable test even if you had a 20 to 24 pin adapter with a 200 w PS. You wouldn't have to hook up any drives just as long as you have a cpu, RAM, and video card on the mb. Additionally the old PS would have to have a squarish 4 pin cpu plug that fits to the mb. Does it have one? Older ATX PSs don't -- Jan Alter bearpuf@verizon.net or jalter@phila.k12.pa.us >> Do you mean something like this?
>> >> http://www.xpcgear.com/20to24pinatx.html >> >> But check to see if that old PS you found in the basement would have >> enough watts to power up your board if you had an adapter to fit it 20 to >> 24. >> -- >> Jan Alter >> bearpuf@verizon.net >> or >> jalter@phila.k12.pa.us >
> It's a 200 W PSU, but it should be enough to power the board with ease, > right? I don't think I even have to hook up the drives to see if this > fixes the problem. > | ||||||||||||||||||||||
> OSbandito wrote: