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Old 17th December 2012, 12:56 AM   #11
Einric is offline Einric  United States
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Default !!! VICTORY IS MINE !!!

SUCCESS!
The volts are now within tolerance.
We shall see how it goes over the next few days.
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Old 17th December 2012, 02:38 AM   #12
Einric is offline Einric  United States
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Default I Think It's Good

Here is a test with the highest load my rig can throw it.
100% CPU & GPU, the Power Supply still holds within ATX specification.
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Old 17th December 2012, 03:30 AM   #13
Einric is offline Einric  United States
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Well....Unfortunately I threw an overclock on my video card and it popped the power supply.
There is no smoke or anything it just clicks and does nothing.

Soooo.....I'm sad now.

Anybody know what might be wrong now?

Either way I'm heading out to get a new power supply.
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Old 17th December 2012, 08:29 AM   #14
MarianB is offline MarianB  Romania
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The PSU clicks? to me it would seam that too much power was demanded from the supply and the protection did not do it's job cus it should have blocked the psu at some current level, that could be cus of your replaced parts, as i have sayd changing caps with larger capacity ones is not always a good thing, not in ATX power supply, so if you added more capacity to the filter caps section be sure to change it back to what it was the original, and also be sure the ESR is as close as possible to the original caps, it is verry important for the compensation network.
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Old 17th December 2012, 12:20 PM   #15
Einric is offline Einric  United States
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The caps were replaced with the same value and the ESR was about 10% lower.

The power supply makes a slight click and then a faint short buzz.
When I pulled the supply after the shutdown it's heatsinks were so hot you didn't want to touch them.
I think the whole culprit of this situation was the Fan and the protection circuits onboard didn't protect the supply.

Oh well I have a SeaSonic on the way.
I'd still like to see if I can figure this supply out more as a learning experience at this point.
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Old 17th December 2012, 03:42 PM   #16
MarianB is offline MarianB  Romania
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I may be wrong but as i see in those 2 pics the heatsinks are verry small, way too small for that much power so combined with a not so efficient cooler fan and maybe a too high of a prot treshold the power devices overheated, i would start by replacing the power transistors and schottky rectifier diodes, after that check everything on the primary side of main PSU ( resistors, caps, diodes ) all removed from the board, and after making sure all is good try starting the psu again.
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Old 17th December 2012, 07:50 PM   #17
Einric is offline Einric  United States
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Thank You
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Old 18th December 2012, 08:00 AM   #18
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I think you are better of with recycling this now. Blowing primary parts due to overload is not good for reliability.

Blow me once, shame on me...blow me twice, shame on you ... (pun very intended but not personally )
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Old 18th December 2012, 11:35 AM   #19
MarianB is offline MarianB  Romania
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As @Einric sayd it is mainly a learning experiance so it does not matter if the PSU will be or not used on a PC, what does matter is that this can help him better understand the workings of PC power supply and in the future the experiance gained with this one can really help him.

On the other hand, i dissagree that a psu with primary side blown cannot be safely restored and used again on a PC, my own PC supply it's revived by me after someone managed to blow it up real bad, it has been a few months of almost continously ON state without any sighn of problems, and i work it up with the PC real hard many times so with good care and some decent experiance good things can stii be done with them.
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Old 18th December 2012, 12:13 PM   #20
Einric is offline Einric  United States
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What really concerns me is that it's supposedly an 850w continuous cower supply but when it popped I was pulling somewhere around 600W from it.
The only way that should be possible is the fan/fan controller, I don't think SilverStone would false advertise that badly.
When this supply was new I'd regularly pull 700W from it without complaint.
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