Power Supply Jumper

[WhiteKnight77]

There is a way to get a PS to run without a motherboard and I can't find it anywhere. I have checked the archives and nothing shows up. I know there is a pic that shows where the jumper goes in an ATX connector to be able to use it. On that note, how does one get the PS to run fans with no switch also?

TIA

 

[Zepper]

1. Never run a switching PSU without a load on it!!! You must have a 1 to 2 Amp load on each of the +3.3, + 5, and +12V rails (generally the higher the capacity of the PSU, the higher the constant load you need. You can get an ATX PSU tester from PC Power & Cooling et al. for about $10. which will provide loads and an on/off button and plugs into the mobo connector or you can build one yourself - loads for 1-2A respectively 3.3-1.6 Ohms, 5-2.5 Ohms, 12-6 Ohms. You can then use the drive connectors for powering accessories.
. You can get up to 2 Amps at 5V off the Standby line (pin 9, wire usually Purple) w/o even turning the PSU on.
. To turn the PSU on, momentarily connect the PS_On (pin 14, wire usually Green) to Ground (pin 15, wire always Black). To turn off, use the power switch on the back of the PSU (if there is one) or jumper 14-15 again momentarily.
.bh.
Still hoping for some :sun: !

 

[Devistater]

Read the note above about not using it unless you have a load. If you are thinking in terms of a switch to switch it on when you start up fans or water cooling, it might be ok. I belive its the green wire to any black ground wire. Try google.

Another way is to get a power tester and plug it in, they run about $10 and have a large resister to have a load. That would be good if you are asking for this in order to test a power supply. Unfortunately you can't use them for much else since they are generally only good to run about 3 minutes at a time. The large resistor isn't large enough to sustain that load for more than 3 minutes safely I supposed you could get one and get an even LARGER resistor and mod it

So basically, tell more about what you want to do and perhaps you will get other suggestions.

 

[WhiteKnight77]

I plan on having case fans running on the PS to see if I can keep the case cool enough to keep the CPU from overheating. With the power supply in the case, I can run 2 of 4 case fans, but not all of them. For some weird reason ASUS Probe only sees my CPU fan runing at 400 RPM.

I had a power supply take a dump in my main PC and am trying to be able to use it instead of this one that I am using now. The good news is the PS did not take anything else with it. I still have to call and get an RMA# from Antec, not to mention mailing it out.

 

[Zepper]

A few fans won't be enough of a load - they are only about 0.15A each. Better to get a 12V DC wall wart and rig your fans up to that. A 12V@1 Amp wall wart would be able to run 5 or 6 fans.
.bh.
:moon: