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View Full Version : Does Anyone Know Hot To Fix A PSU???


JustChill
10-20-05, 07:36 PM
A friend Just gave me a powerstream 600 sli, it was a DOA that he let just sit. He then took the top off (voiding the warranty) thinking he could just replace the fuse or something. So long story short, he no fixy, so I took it off his hands. Is there anyone here that could fix or help me fix it?????
Thanx
JC :shrug:

Showstoppermd
10-20-05, 09:06 PM
Never even attempted it but a google search shows some interesting links:
http://www.nutsvolts.com/PDF_Files/PSRepair.pdf

dicecca112
10-20-05, 09:36 PM
well personally I wouldn't attempt it, if you fix it incorrectly you could either majorly shock yourself, screw up your rig, cause a fire ect.

Jacobman
10-20-05, 10:18 PM
Just make sure you dont do anything major with it on, lol. Good luck!

Blankfile
10-20-05, 10:56 PM
herrrr i *think* that if you manage to unload a capacitor into your body you're gonna fry on place. I'm no PSU guru, but i believe there is like a LOT of power stored in little parts of the psu, and without being plugged onto the wall, there is still much current left. Someone please confirm this before you go and play inside the psu?

p|astic
10-20-05, 11:05 PM
absolutely. it only takes like 100 milli amps to make your heart shake in it's boots = croak

1cem4n
10-20-05, 11:21 PM
well you just voided your warranty and so... i guess you haev a shiny paper weight. can i have it?

-1cem4n

JTanczos
10-21-05, 12:32 AM
HE didnt void the warrenty. His friend did. He just wanted to fix it.

Sucks he opened it an voided the warrenty. Esp if it was a brand new DOA. :( I personally wouldnt try to redo it but I hope you can do something with it. Just dont kill yourself.

JT

Veland
10-21-05, 07:55 AM
First: Be careful working insde a PSU. As mentioned, the caps can hold quite a charge for a long time (but modern PSU's normaly has a bleed resistor that drains the power in a minute or two) Chance of death is minimum, as caps has got high voltage but not that much amps. Just make sure the PSU is unplugged, getting AC power through your heart is not a good thing.

Then again, I've been shocked from caps numerus times, has been holding on to live AC wires several times, shocked myself with high voltage sources a lot, and still I'm alive!

As for fixing the PSU, get out your DMM and do some troubleshooting:
Fuse ok?
Wires from AC intake ok?
Switch (if present) ok?
Pwr_on line from ATX connector ok?
Check underside of pcb for dry solder joints
Check pcb for broken traces
Check for leaky caps
Check for blown transistors/chips/similar

That's about it for what can be easily checked. If no errors found there, it's a lot harder to figure out...

telexen
10-21-05, 09:09 AM
I haven't done any replacement of anything (other than fans)...but one time I was trying to solder a new fan into a PSU board...I had it out of the case and accidently touched it to the metal casing while it was on (yes, it was on and I was holding it :o)...made a pretty loud zap and killed a trace...but soldering a wire between two leads at each end of the trace fixed it :D

JustChill
10-22-05, 02:39 AM
well I took a closer look and there are four screws that hold the base pcb board to the bottom of the case and one of the corners is still around the screw but no lonber atached to the board. so I unscrewed it and took a look at the bottom of the corner and sure enough there is on tracer going threw the corner peice of pcb. I wonder if I take a small peice of insulatede wire and solder it to either end of the tracer wire, will that fix it? :shrug:
So does anyone know of anybody in this or another forum that is a psu guru or at least qualified to work on this ****el. :bang head man to have 2 powerstreams that would be sweet....hmm maybe I will have a long talk with it and tell it all the good things about being a good psu, a happy, powerfull and steady psu and why non working psu's are loosers and go noware in life :argue:
or I could role a fat j and have a real heart to capacitor talk with him, ya know kinda bond with him....ya thats it a real electrafiying conversation that willbe

maelstromracing
10-22-05, 10:43 AM
If it is a broken trace, just find a starting point prior to the break and the next intersection on the board after the break and solder a wire inbetween. That will fix the broken trace.

Dukeman
10-22-05, 12:34 PM
Wow, not one person so far recommended asking the PSU company for help. First, they have the schematics and sometimes a nice techical support person will forward them to you. Second, they usually repair out of warranty parts and the price may not be too bad. Third, they may take pity on you and warranty it anyway (it happens).

All of these options will get much closer to a working psu with less hassle and time than just shooting in the dark.

3DFlyer
10-22-05, 07:49 PM
I would seriously send that thing to have a full checkup. You might find visible damage, but there may also be hidden electrical damage.

A PSU is something that can casue alot of damage is soemthing go wrong. I would send it to somebody that has all of the equipment to check it out right.

With shorts, there is alot of ptential damage that could've occured in there. The unit needs to electrically checked out, and then it needs to be loaded and tested to be certain it puts out it specs.

I would talk with OCZ, and explain what the situation is, and ask them what they recommend. They can give you the best options, and nobody knows a piece of hardware btter than the people who make it and sell it. :)