Dying PSU - guess which brand? Corsair.

[Lyricist]

So, to cut the story short. Bought a brand new Corsair GS 700 (Gaming Series, yes) since i am a sucker for using all those power consuming parts, like dual HD 4890.

So, the best part - the PSU dies within 6 months of being bought new.
It starts getting hick-ups and turns off within 5 minutes, it did so twice when i understood the problem is with PSU and left it be turned off.
Next day - aint turning on at all, the fan spins twice before turning off.

Ive given it to two experienced people since now and they all have handed it back to me with the same response: ''dont see the problem, seems to be running perfectly''. I was handed it back, decided to give it a try - heh, really does work.... for about half a day before the same old trick.

Gave it to someone else to check the PSU out, and here come the conclussions:

1) The damn power cables are faulty - you move them and the power disappears.
2) The PSU has a tendency of turning off whenever it is put to test or task, as i shall say.
3) Some chips could or condensators could be fried, which causes the PSU to turn off randomly.


Truth be told, ive lost my Confidence or interest in Corsair as a brand at all.
I dont see why i should pay top dollar for computer parts that die out within a few months.

So, any suggestions on how to fix this, if it is fixable at all?

[Pentium4]

Re: Dying PSU - guess which brand? Corsair.

I've tried to avoid Corsair PSU's. Doesn't that model use Teapo caps? I'd check them. Clear pics of the inside would be great

[mockingbird]

Re: Dying PSU - guess which brand? Corsair.

I've tried to avoid Corsair PSU's. Doesn't that model use Teapo caps? I'd check them. Clear pics of the inside would be great

No. The GS800 model uses a mix of UCC and Teapo but mostly Teapo.

The GS700 model uses all Samxon GF series for the secondary:

http://www.hardwaresecrets.com/artic...-Review/1617/5

The electrolytic capacitors used in the secondary are from Samxon and labeled at 105º C, as usual. See Figure 20.

If they were Teapo SC, like in the GS800, it would have lasted a lot longer. Teapo SC is probably one of the best non-reliable series out there.

[Pentium4]

Re: Dying PSU - guess which brand? Corsair.

No. The GS800 model uses a mix of UCC and Teapo but mostly Teapo.

The GS700 model uses all Samxon GF series for the secondary:

http://www.hardwaresecrets.com/artic...-Review/1617/5


If they were Teapo SC, like in the GS800, it would have lasted a lot longer. Teapo SC is probably one of the best non-reliable series out there.

Ouch, Samxon GF?

[Per Hansson]

Re: Dying PSU - guess which brand? Corsair.

I would create a new thread on the Jonnyguru forums about this.
Corsair do have really good warranty and they have some company reps over there that glance over posts and they might be able to help you out...

Coincidentally I do have a similar issue with my Corsair TX650 PSU but I have not actually tried to RMA it over this issue (Works fine as long as I don't hotplug any harddrives)

http://www.jonnyguru.com/forums/showthread.php?p=66964

[mariushm]

Re: Dying PSU - guess which brand? Corsair.

Corsair is still supposed to have RMA for the power supplies, so go on their website and see what can be done.

You can check the jonnyguru.com forums (link above), there's a Corsair representative there who may be able to help you but try to do the rma process on the website yourself first.
Jonnyguru owner himself works at Corsair now.

Yeah, don't bother complaining about capacitors to Corsair. They said they select just a few companies and analyze their quality and spew a lot of marketing talk, but they still mix capacitors between production batches even on their high end board. Seems like they just don't care, whatever is that day at the OEM manufacturer, that's what they use.

Ex see AX860i ones... some have fpcap polymers, some have capxon polymers... some have rubycon electrolytics on the modular interface, some have taicon.. see the explanations in the thread:

http://www.jonnyguru.com/forums/showthread.php?t=9530

They use Samxon on their budget psu pcbs all the time.

Seasonic so far is the only one I see they consistently use the same quality Japanese capacitors in their high end power supplies.
If it was up to me, today I'd only buy the Seasonic G series designs

[mockingbird]

Re: Dying PSU - guess which brand? Corsair.

Why can't they use Samxon RS instead of Samxon GF?!

[Lyricist]

Re: Dying PSU - guess which brand? Corsair.

Cant be done taken in mind that i dont have the original check, so i cant verify my purchasal of this PSU, neither can it be done taken in mind that the warranty seal has been broken.


Either way, here's some pictures i just took.

http://i50.tinypic.com/140g6li.jpg

http://i49.tinypic.com/set37s.jpg

http://i45.tinypic.com/f087yt.jpg

http://i49.tinypic.com/335beyp.jpg

[mockingbird]

Re: Dying PSU - guess which brand? Corsair.

Very blurry photos, but it looks like yours has Teapo SC and not Samxon GF like Gabe's.

Would be interesting to test the Teapo SC caps. I have a bunch of them I took out of Fortron PSU's that are not bulged. If I ever end up buying an ESR meter, I would like to see just how many of them are really out of spec.

...Anyway, if you post a list of the caps, someone can help you find replacements. It's worth re-capping. CWT PSH-II platform. You probably also want to touch up weak lead-free solder joints with an iron and flux.

[Lyricist]

Re: Dying PSU - guess which brand? Corsair.

Sorry, couldn't think i coulda made any better screens atm, made it with an iphone 4 (not bragging, since i hate Iphones), the only thing better than that would be a small digital camera.

Any tips on how should i make this list? I wouldn't exactly deem myself as a professional when it comes to such things.

Edit: Yes, my PSU is using Teapo ones.

Also, apparently i have the discontinued version of the Gaming Series 700W Corsair PSU, aka CMPSU-700G.
Lucky me.

[mockingbird]

Re: Dying PSU - guess which brand? Corsair.

Voltage, capacity, Brand, series, dimensions in mm (width x height).

[c_hegge]

Re: Dying PSU - guess which brand? Corsair.

Why can't they use Samxon RS instead of Samxon GF?!

Because their specs aren't right.

[mockingbird]

Re: Dying PSU - guess which brand? Corsair.

It's true, they're not as good as KZE, or as highly rated as Teapo SC. But for lower-wattage supplies, they're perfect.

[Lyricist]

Re: Dying PSU - guess which brand? Corsair.

Well, if im correct, it uses Teapo 2200 uF capacitors, 16V

http://i47.tinypic.com/2d2vc3.jpg

http://i49.tinypic.com/1ieuf7.jpg

http://i46.tinypic.com/mc3spt.jpg

Couldn't find info on web, though.