the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

old computer power supply


Post ReplyPost New Topic
< Prev Topic Next Topic >
josecoelho 
Member - Posts: 4
Member spacespace
Joined: May 12, 2014
Location: Portugal
Posted: May 12, 2014 at 3:22 PM / IP Logged  
Hey all,
I got a old computer and I decided to get some components from it. The power supply was one of them. I saw that if we connect the green wire with any of the blacks, I could make the PSU start, but that isn't hapenning. But whenever connected to the motherboard it works fine. The model is PDP-116P from COMPAQ with an output of 24 pins. Can someone help me to get it working? I already googled the pinout but nothing that I found worked. I also tried connecting white and grey wires.
Thanks in advance
i am an idiot 
Platinum - Posts: 13,470
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: May 12, 2014 at 8:39 PM / IP Logged  
As far as I know, every ATX power supply will power up if you connect the green wire to ground. There is only one green wire but there are several grounds. Make sure it is a ground wire you are connecting it to.
josecoelho 
Member - Posts: 4
Member spacespace
Joined: May 12, 2014
Location: Portugal
Posted: May 13, 2014 at 2:10 AM / IP Logged  
I opened the box and all black wires came from a "zone" that says GND, also, when connected to the motherboard, measuring the voltage all black wires are ground. I tried the green wire with all the black, it never worked. I also saw somewhere that COMPAQ PSU's have a completely different pinout from the "standard", as seen here: Compaq 24 pin power connector pinout
josecoelho 
Member - Posts: 4
Member spacespace
Joined: May 12, 2014
Location: Portugal
Posted: May 16, 2014 at 2:18 PM / IP Logged  
Hi again,
I made some search and I found this:
http://www.experts-exchange.com/Hardware/Components/A_3940-Use-a-Compaq-200-Watt-Power-Supply-PSU-as-a-second-power-source.html.
But the PSU only turns on for a few seconds, any idea to fix this?
oldspark 
Gold - Posts: 4,913
Gold spacespace
Joined: November 03, 2008
Location: Australia
Posted: May 16, 2014 at 6:55 PM / IP Logged  
Compaq... Like HP, great stuff but always have to ad their own little proprietary bit or something to make it incompatible (or inCompaqable) with other industry standard designs or interfaces.
Maybe they require a minimum load (for regulator tho that IMO is doubtful) or have current sensing circuitry...
For the $5 or $10 it would cost, I'd get another brand PSU if you can't find a discarded PC by the road - that if the fun or your patience runs out, or you have a use for it.
josecoelho 
Member - Posts: 4
Member spacespace
Joined: May 12, 2014
Location: Portugal
Posted: May 17, 2014 at 4:04 AM / IP Logged  
Probably is the best thing to do, to buy other PSU. By the way, what should I do to this one?
oldspark 
Gold - Posts: 4,913
Gold spacespace
Joined: November 03, 2008
Location: Australia
Posted: May 17, 2014 at 5:38 AM / IP Logged  
Turn it off.

Sorry, you can NOT post a reply.
This topic is closed.

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Tuesday, December 7, 2021 • Copyright © 1999-2021 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer