Ocz600sxs

[diif]

Hello, I decided i'd have a look at a failed OCZ power supply that has been sitting in my dead pile for a while.
After freeing up the mass of cables i was able to see the visibly bulging top of a cap. Pressed right up against the heatsink, it even had a piece of heatshrink around it, i'm guessing in an effort to reduce heat transfer.

It's a CapXon 2000uF 6.3v showing 4920uF with an ESR of 0.08 ohms on my meter. It's 8mm x 25mm, now i've tried a 10mm and it's to fat.
The only 8mm cap i can find is this one.

http://www.digikey.com/product-searc...=0&pageSize=25

Is this a suitable replacement and is this power supply worth repairing ?
I'd replace all of the caps not just the bulging one.

[ReeceyBurger123]

Re: Ocz600sxs

Hello the replacement capacitor (nichicon hm) is too low esr and is only for mother board use, its a pain when you dont have the correct size cap and you cant fit in replacements, the only real suggestion I have is that you down the capacitance to 1000-1800uf, panasonic do the fr series in 8mm diameter in those values.
Look up the fr in 1000-1800 uf in 8mm diameter and report back they will be your best choice.

[diif]

Re: Ocz600sxs

Thanks, I've located a Panasonic FR with the correct dimensions/voltage but it's only 1500uF.
I'd have to replace two of these out of out of spec caps, the rest i have found of the same same value/size.

[kc8adu]

Re: Ocz600sxs

looks like an old fsp build.
fm would do fine in that.

[ReeceyBurger123]

Re: Ocz600sxs

Thanks, I've located a Panasonic FR with the correct dimensions/voltage but it's only 1500uF.
I'd have to replace two of these out of out of spec caps, the rest i have found of the same same value/size.

Your welcome, hope all goes well.

[ReeceyBurger123]

Re: Ocz600sxs

looks like an old fsp build.
fm would do fine in that.

Can you get 8mm 2200uf fm's I cant find any online ?

[diif]

Re: Ocz600sxs

Here's the data sheets for the FR, FR and FC. Unfortunately it seems Panasonic don't make a 2200uF 8mm diameter cap. The highest they do in 8mm is 1500uf.

[Behemot]

Re: Ocz600sxs

It is Fortron BlueStorm II internally. You should be able to squeeze D10 capacitor in there without the extra heatshrink, I always have, try again.

Beware! You need to replace all capacitors in this PSU as all of them will fail, it is only a matter of time. Most Bluestorms II (or OEM designs like GLN based on them) I get have about 80 % caps bad and it is not even able to start anymore. That includes usually totally baked +5 V stand-by rail. You also need to replace two general-purpose high-voltage 1N4007 diodes in the stannd-by circuitry for fast diodes as everell noted.

I can provide you with the capacitors (and diodes if you need), a combination of NCC KYA 3300/6,3 D10, LXZ 1200/6,3 D8 and KZH 1000/16 D8 (plus some smaller ones), you can do the repair with these for sure (I have been doing them even with Samxons RS 3300/16 D10, now with 1000/16 D8 it is easier).

[diif]

Re: Ocz600sxs

Thanks, after a second look, i can just squeeze a 10mm cap in there but it's touching both the coil and the heatsink. Thanks for the heads up regarding the two diodes, i shall be replacing those along with all the other caps. It's a very kind offer of the components but i think i have the majority of them already as long as Panasonic FR FM FC are ok. It's just the diodes i need to source.

[Pyroblast]

Re: Ocz600sxs

Hi all in this thread. Diif, allow me to invade you thread.

I have just bought a PSU of this brand, wattage and model. I haven't turned it on, but the person I have bought said to me that it is working properly, even though he is not using it for 1 year.

Before I start working with her, I though in changing all the capacitors and some of the most vital semiconductors.

I'd like to hear from you, some advices on what should I do before start working with this PSU.

For example, from what Mr. Behemot said, we need to replace all the caps. So I wonder, what brand should I use to replace all the caps? From the topic of good caps, the best ones are: Nichicon, Nippom/United Chemi-Con, Panasonic, Rubycon, Sanyo and IMO. In the electronic store next to me they sell those brands:

Cornell, Dubilier, Elna, EPCOS, Kemet, Lelon, Nichicon, Panasonic, Parallax, TE Connectivity, United Chemi-Con and Vishay.

From this list and from what I have read, the best capacitors in this list are: Nichicon, Panasonic, United Chemi-Con and maybe Elna, being the last brand the last choice.

So for the input capacitor (the filtering one) which brand should I choose, what capacitance, ESR and temperature rate? Should I use the same spec as the cap. that is on the PSU or I can use a better one (more capacitance, more temperature rate, less ESR, etc)?

And for the output filtering? It is better to use solid caps (those Aluminum caps) or the elect normal caps? What are the main differences?

Kind regards.

EDIT: I forgot to ask another thing. As you guys might know, this PSU doesn't have a MOV. It is possible to add a MOV to the PSU? Where should I put the MOV?

diif, could you make a list of the capacitors inside this PSU? Brand, temperature range, size?

[Behemot]

Re: Ocz600sxs

I wrote you PM about that, basically I can supply you with all the caps you need. You can possibly get some replacements in european shops but it will be more expensive anyway

As for varistor, sure, you can add it. I usually forget to add it each time, but anyway, as I do these repairs, I got stock of them, can provide you as well.

[Pyroblast]

Re: Ocz600sxs

Thanks Behemot. I have answered already to you

[diif]

Re: Ocz600sxs

My power supply is still in bits on my shelf waiting for when i get a quiet period. My job of desktop support has been very busy recently and i sadly haven't had the time to come back to this just yet.

[c_hegge]

Re: Ocz600sxs

I recon you would get away with the Nich HM just fine. It is lower ESR than the original, but it will also be higher ESR than the standard 10mm 2200uF HM (due to the smaller can size). I've used those 8mm 2200uF 6.3V Nich HM caps in other FSP Power supplies before and it's been fine.

[Behemot]

Re: Ocz600sxs

It's more on the high side even though it still may be OK. Bigger problem is it is only 2000 hours endurance and I don't trust these caps series, they've been spotted bad years after the problems should have been solved.

[Pyroblast]

Re: Ocz600sxs

Thanks for the reply.

Guys, I have a problem here in hands.

I have tested this PSU, even without replacing yet the caps (because I don't have them right now), to see if it works.

For my surprise the PSU in the 12V line has 9,8V, as you can see in the picture bellow:


online photo sharing

What might causing this? Could this be caused by bad caps? The HF transformer that it is not working properly? Or it might be the controller (6800)? But to be the controller (the controller is the same for the other lines, of course), the other lines shouldn't work properly too. Right?

The HF transformer is the same for all voltage levels, right? So maybe it is not related to the HF transformer at all?

I have been told that with that voltage (9,8V) the PSU shouldn't be able to operate at all.

Kind regards.

Kind regards.

[Pyroblast]

Re: Ocz600sxs

EDIT: I forgot to post some pictures of the PSU:

Any suggestions guys?

[Behemot]

Re: Ocz600sxs

Use multimeter for real measurement of the voltage.

[Pyroblast]

Re: Ocz600sxs

Yes, I'll do that. However, supposing that even with the multimeter the results are pretty much the same.

What might be the cause of this issue? This kind of problem has happened to someone here?

[Behemot]

Re: Ocz600sxs

Report back when you got the numbers.