Jumper to turn on power supply w/o motherboard?

biohazard41 · 09-08-2008, 09:36 PM

Well guys im new here ... And i have a question...... I have a power supply that i want to turn on as well without the motherboard... It's an old LiteOn 200W power supply.... I've been reading many forums and all of them say to connect the green and black ones... but mine does not have a green one... Well it does but its a ground that is connected on the power button.... I'm able to leave it on with only three wires connected to the motherboard.. A yellow one, a black one and a red one.... Anyone have any idea what I can do ??

dai · 09-08-2008, 09:46 PM

is it a atx or an at power supply
a at psu has 2 plugs that connect to the m/b
a atx has 1

biohazard41 · 09-09-2008, 06:29 AM

It has two plugs that go into the motherboard... one says P1 and the other says P2............

dai · 09-09-2008, 07:26 AM

it's an AT power supply
look at table 26-6
http://www.freeopenbook.com/pc-hardw...26-SECT-3.html

biohazard41 · 09-09-2008, 07:33 AM

Ok so I looked at it right i want to connect the orage(white) to a ground?? Sorry but the table doesn't make that much sense to me thanks for the help though

dai · 09-09-2008, 07:40 AM

looks that way to me
i know very little about AT supplies

biohazard41 · 09-09-2008, 08:19 AM

well thanks for all the help dai

biohazard41 · 09-09-2008, 08:21 AM

But I still have doubt... Because I'm able to leave the power supply on while only a red, black and yellow wire... one wire puts out 17Vs and the other one puts out 12Vs......... this is what made me very confused since the power supply only has 5V and 12V outputs so im guessing the 5 and the 12 meet up somewhere....If i disconnect any of those three from the motherboard the power supply goes off.....

dai · 09-09-2008, 08:27 AM

i have asked someone else that may know more on it

**linderman** · 09-09-2008, 12:27 PM

I am sorry to say; but I have not messed around with an AT power supply in more than 6 or 7 years :(

I might be able to shed alittle more light if you explain what you are trying to do

BTW I dont think the 5 volt should not be combining with the 12volt ?

biohazard41 · 09-09-2008, 06:02 PM

Yes it's a very old power supply........ Im just trying to turn it on without the mother board to connect other components for my pc.....Well I dont know what is happening with the three cables that need to be connected to the motherboard to stay on.....And i found out why it was reading 17V Its because the yellow is ground and the black is the positive and when i tested the black(12v) with the red(5v) thinking the black was ground so now when i test the red and the ground it only reads 5v so yeah they don't meet up.... I can't understand how this AT works if it was ATX it would of worked very simply but I'm kinda giving up on it because it's only 200W and it cant maintain power to the amp i need to hook it up not even at 1/4 of the level of the amp it stays on with just a peak of bass it goes off ......... So now it's all curiosity cause i might just get an ATX

biohazard41 · 09-09-2008, 06:05 PM

Thanks alot guys I really liked these tech forums i will try to stay connected and help other peeps in something that i might know cause i do know a thing or two.

**wrench97** · 09-09-2008, 06:14 PM

The old ATX PSU's did not have a p_on from the Motherboard they a 110v off/on switch that connected to the front of the case, I actually still have one of these hooked to a HO train platform it should provide 12v and 5v if you have 17v I would have to say the supply is either bad or a special purpose nonpc unit.

**linderman** · 09-09-2008, 08:34 PM

yes the AT spec did not have to have a closed loop to fire up ....... but you will find the 12volt rails VERY lacking on the AT PSU they were all about the 5 volt and the 3.3. volt

biohazard41 · 09-09-2008, 10:11 PM

Quote:

Originally Posted by wrench97

The old ATX PSU's did not have a p_on from the Motherboard they a 110v off/on switch that connected to the front of the case, I actually still have one of these hooked to a HO train platform it should provide 12v and 5v if you have 17v I would have to say the supply is either bad or a special purpose nonpc unit.

Well like i said I was testing the volts in a wrong way........... it only has 12V and 5V outputs

biohazard41 · 09-09-2008, 10:12 PM

Quote:

Originally Posted by linderman

yes the AT spec did not have to have a closed loop to fire up ....... but you will find the 12volt rails VERY lacking on the AT PSU they were all about the 5 volt and the 3.3. volt

So that means i cant turn in on without motherboard??

**wrench97** · 09-10-2008, 12:24 PM

No that means they have a switch to turn them on thaey don't need a motherboard connection.

biohazard41 · 09-10-2008, 03:51 PM

Quote:

Originally Posted by wrench97

No that means they have a switch to turn them on thaey don't need a motherboard connection.

Well Yeah I know but if its not connected to the motherboard the switch doesn't turn it on IT has to be connected I tried it already

**wrench97** · 09-10-2008, 04:14 PM

Any model numbers on this?

biohazard41 · 09-10-2008, 09:08 PM

Quote:

Originally Posted by wrench97

Any model numbers on this?

Its a LiteOn
Model #: PA-4022-6F
200W

09-08-2008, 09:36 PM	#1 (permalink)
biohazard41 Registered User Join Date: Sep 2008 Posts: 27 OS: Xp Sp3	Jumper to turn on power supply w/o motherboard? Well guys im new here ... And i have a question...... I have a power supply that i want to turn on as well without the motherboard... It's an old LiteOn 200W power supply.... I've been reading many forums and all of them say to connect the green and black ones... but mine does not have a green one... Well it does but its a ground that is connected on the power button.... I'm able to leave it on with only three wires connected to the motherboard.. A yellow one, a black one and a red one.... Anyone have any idea what I can do ??

09-08-2008, 09:46 PM	#2 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,670 OS: win 7 32x 64x rtm	Re: Jumper to turn on power supply w/o motherboard? is it a atx or an at power supply a at psu has 2 plugs that connect to the m/b a atx has 1 __________________

09-09-2008, 06:29 AM	#3 (permalink)
biohazard41 Registered User Join Date: Sep 2008 Posts: 27 OS: Xp Sp3	Re: Jumper to turn on power supply w/o motherboard? It has two plugs that go into the motherboard... one says P1 and the other says P2............

09-09-2008, 07:26 AM	#4 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,670 OS: win 7 32x 64x rtm	Re: Jumper to turn on power supply w/o motherboard? it's an AT power supply look at table 26-6 http://www.freeopenbook.com/pc-hardw...26-SECT-3.html __________________

09-09-2008, 07:33 AM	#5 (permalink)
biohazard41 Registered User Join Date: Sep 2008 Posts: 27 OS: Xp Sp3	Re: Jumper to turn on power supply w/o motherboard? Ok so I looked at it right i want to connect the orage(white) to a ground?? Sorry but the table doesn't make that much sense to me thanks for the help though

09-09-2008, 07:40 AM	#6 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,670 OS: win 7 32x 64x rtm	Re: Jumper to turn on power supply w/o motherboard? looks that way to me i know very little about AT supplies __________________

09-09-2008, 08:19 AM	#7 (permalink)
biohazard41 Registered User Join Date: Sep 2008 Posts: 27 OS: Xp Sp3	Re: Jumper to turn on power supply w/o motherboard? well thanks for all the help dai

09-09-2008, 08:21 AM	#8 (permalink)
biohazard41 Registered User Join Date: Sep 2008 Posts: 27 OS: Xp Sp3	Re: Jumper to turn on power supply w/o motherboard? But I still have doubt... Because I'm able to leave the power supply on while only a red, black and yellow wire... one wire puts out 17Vs and the other one puts out 12Vs......... this is what made me very confused since the power supply only has 5V and 12V outputs so im guessing the 5 and the 12 meet up somewhere....If i disconnect any of those three from the motherboard the power supply goes off.....

09-09-2008, 08:27 AM	#9 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,670 OS: win 7 32x 64x rtm	Re: Jumper to turn on power supply w/o motherboard? i have asked someone else that may know more on it __________________

09-09-2008, 12:27 PM	#10 (permalink)
linderman Moderator, Hardware Team Join Date: May 2005 Posts: 20,440 OS: win 2000 pro / Win XP pro My System	Re: Jumper to turn on power supply w/o motherboard? I am sorry to say; but I have not messed around with an AT power supply in more than 6 or 7 years :( I might be able to shed alittle more light if you explain what you are trying to do BTW I dont think the 5 volt should not be combining with the 12volt ? __________________ I still know nothing and I respect that fact, striving to improve and, along the way, help anyone that comes from the place that I used to be! Power Supply Selection LEARN TO BACK-UP YOUR DATA FREE & EASY YouTube - Runtime Software DriveImage XML tutorial Last edited by linderman; 09-09-2008 at 12:29 PM.

09-09-2008, 06:02 PM	#11 (permalink)
biohazard41 Registered User Join Date: Sep 2008 Posts: 27 OS: Xp Sp3	Re: Jumper to turn on power supply w/o motherboard? Yes it's a very old power supply........ Im just trying to turn it on without the mother board to connect other components for my pc.....Well I dont know what is happening with the three cables that need to be connected to the motherboard to stay on.....And i found out why it was reading 17V Its because the yellow is ground and the black is the positive and when i tested the black(12v) with the red(5v) thinking the black was ground so now when i test the red and the ground it only reads 5v so yeah they don't meet up.... I can't understand how this AT works if it was ATX it would of worked very simply but I'm kinda giving up on it because it's only 200W and it cant maintain power to the amp i need to hook it up not even at 1/4 of the level of the amp it stays on with just a peak of bass it goes off ......... So now it's all curiosity cause i might just get an ATX

09-09-2008, 06:05 PM	#12 (permalink)
biohazard41 Registered User Join Date: Sep 2008 Posts: 27 OS: Xp Sp3	Re: Jumper to turn on power supply w/o motherboard? Thanks alot guys I really liked these tech forums i will try to stay connected and help other peeps in something that i might know cause i do know a thing or two.

09-09-2008, 06:14 PM	#13 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,649 OS: Win7	Re: Jumper to turn on power supply w/o motherboard? The old ATX PSU's did not have a p_on from the Motherboard they a 110v off/on switch that connected to the front of the case, I actually still have one of these hooked to a HO train platform it should provide 12v and 5v if you have 17v I would have to say the supply is either bad or a special purpose nonpc unit. __________________ Power Supply and Selection

09-09-2008, 08:34 PM	#14 (permalink)
linderman Moderator, Hardware Team Join Date: May 2005 Posts: 20,440 OS: win 2000 pro / Win XP pro My System	Re: Jumper to turn on power supply w/o motherboard? yes the AT spec did not have to have a closed loop to fire up ....... but you will find the 12volt rails VERY lacking on the AT PSU they were all about the 5 volt and the 3.3. volt __________________ I still know nothing and I respect that fact, striving to improve and, along the way, help anyone that comes from the place that I used to be! Power Supply Selection LEARN TO BACK-UP YOUR DATA FREE & EASY YouTube - Runtime Software DriveImage XML tutorial

09-10-2008, 12:24 PM	#17 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,649 OS: Win7	Re: Jumper to turn on power supply w/o motherboard? No that means they have a switch to turn them on thaey don't need a motherboard connection. __________________ Power Supply and Selection

09-10-2008, 04:14 PM	#19 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,649 OS: Win7	Re: Jumper to turn on power supply w/o motherboard? Any model numbers on this? __________________ Power Supply and Selection