Killed A PSU???

[jedihobbit]

Okay think I've done a real NOOB here and killed my psu. On my water cooled mATX build had everything hooked up to do the leak test and used the "jumper" provided to bypass the mobo. Had an initial major leak (didn't seat on of the tubes all the way) which side tracked me for a bit. After cleaning it up I started all over again with no leaks. However did notice a big air bubble in the GPU cooler so was doing the usual move it around bit to get rid of it. Then everything died. Even after I hooked the PSU main power cable to the mobo all I would get is a momentary start of the fans then nothing.

Out of curiousity I hooked up an old PSU to just the WC pump with the jumper and it runs, sooooooooo????????

Think I remember some where that if you run the PSU without the mobo hooked up you can ruin it. Is this what I appearently have done?

 

[Modelworks]

Most PSU either will not start or will start and shut down if they require a load to start. So that probably is not the source of your problems.
I would unplug the psu, disconnect everything from it, remove it from the case and only connect a hard drive to it. Plug it back in, then jumper the green+black on the motherboard power connector and see if it starts. If it doesn't then it is the psu.

Some psu go into safe mode where they have to be unplugged from the AC before they reset.

 

[jedihobbit]

I had unplugged it several times and had down time in case there was some thermal overload circuit.

However you suggestion to just try and power a HDD intreged me, so............
1. Didn't have a spare HDD so said what the heck, plugged in a 120mm fan and up she spun!
2. Okay lets try the one cable that powers all the system fans = 2 x 80, 3 x 40(dominator cooler), 1 x hdd cooler (2 x 40), & 1 x 60. Sure enough they all spun up.
3. Then let's try the Aqua Computer cooling system, 1 x pump and 2 x 120 fans. The pump ran and the fan moved. Then I noticed I had forgotten to unhook the fan cable but not to worry the fans are up and running also.
4. Cool it must have reset so hooked everything back up (GPU, HDD & optical drive, and mobo). Click......back to where I started.

Would assume something in the PSU will not take the full load. :brokenheart:

 

[jedihobbit]

Desided to play with it one more time before ordering the replacement PSU....... so using the mobo jumper block I

1. hook 120mm fan > it runs
2. hook up a the fans in the case > they run
3. hook up the pump & fans in water cooling system > they run
4. hook up HDD & optical drive > they appear to be functioning
5. hook up 2, 3, & 4 together > everything seems to be running
6. hook the 4-pin connector to mobo with 5 > everything dies

Take said power supply and hook up to what I can in another build

1. 4-pin connected to mobo
2. power connector connected to mobo
3. manage to hook up one of the molex cables from supply to power 2 of the three HDDs. Can't power the case fans or optical drive as that would require too much disassembly.
4. Was able to power up the system, load windows, and even run a 10 minute run of Prime before system started to get too warm.

What does this sound like????? Something like maybe my non-conductive coolent fried something on the mobo?? I may not have dried it out as well as I thought?? When I was moving the case around to work on the air bubble some fluid did something??

SO many questions and no simple tests. But to me it appears the board may be shot.

Thoughts.......

 

[Beanie46]

Originally posted by: jedihobbit
Something like maybe my non-conductive coolent fried something on the mobo?? I may not have dried it out as well as I thought??
Thoughts.......

There's no such thing as non-conductive coolant....only in advertising does it exist. Once your coolant hit your motherboard, any dust, dirt, etc. contaminated the fluid and made it conductive......probably shorted something on your mb somewhere.

You could try hitting it with a blow dryer for a while to ensure you really did get it dry, and that means everywhere....in all your slots--memory, PCI, etc.

Or, alternatively, pull your mb out of your case, place on a non-conductive surface like a piece of plain brown cardboard (this does NOT include an anti-static bag, esp. a sliver one.....those are actually conductive on the outside surface; that's how they work) and begin adding components to it and see if it'll boot with minimal parts attached. One stick of memory, video card (although a bad video card can and will prevent the mb from booting.....)