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Possibly the dumbest question, ever ...

K

Kharz

n00b
Joined
Aug 28, 2005
Messages
48
.... so Ive had a good water build which lasted me almost five years. In that time -- I didnt do much. Would ocassionally drain the water and put in new distilled. But I never re-did any of the hoses, added components, etc Im still a little stunned at how easy the system was t live with.

So now I am doing a system rebuild and am going to replace all the hoses ... new cpu block, new gpu block, etc. Here is the really embarassing question:

How do I start up the PUMP without firing up the rest of the system? The PSU wont turn on without the MB telling it to turn on .... so how do I bypass that?

And thanks in advance for your help
 
Put an uncoated paper clip in the 20/24 pin of your PSU. Green to black. Make sure the power is off when you do this. Also make sure all the other power connections besides the pump are not connected.

I use this though. Makes life easier and safer.
 
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Yup, green to any ground wire. To my understanding the only purpose of that green wire is to make sure that the PSU is plugged into the mobo. So connecting it to one of the black wires will create the loop and trick it into thinking it's plugged into the mobo.
 
Yeah, We use an old coolermaster 400w and a coolmax PSU voltage tester to prime and leaktest loops.
 
0bzeek said:
Yup, green to any ground wire. To my understanding the only purpose of that green wire is to make sure that the PSU is plugged into the mobo. So connecting it to one of the black wires will create the loop and trick it into thinking it's plugged into the mobo.
Click to expand...

Green is the signal wire for the PSU to turn the remaining rails on.

When the PSU is "off" but the switch on the back is on, the PSU is producing 5v on the standby rail. That way the motherboard has power supplied to it which is directed to the front panel connectors and your power button. When you hit the power button, the 5vsb loop is completed, and the PSU brings the 12v, 3.3v and 5v rails on line. A signal isn't sent up the green wire, but once the green wire is grounded (the PSU senses a current on it), it fires up.
 
If your pump runs off a 4/3pin fan header get one of those cheap fan to molex convertors.

I keep an old hotwired 350w PSU with one of the adapters from a scythe fan just for this! :D
 
Yeah; I used to have an old PSU that I kept just for this ..... and accidentially threw it out when I started collecting too many old PSUs.

Oops!

Thanks for the help folks!
 
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