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maduser
05-13-2011, 01:32 PM
Hi,
My PSU has two 680μF HEC capacitors.
I was wondering, are this capacitors any good?

Thanks
Tator Tot
05-13-2011, 02:41 PM
From experience of some users, they don't violently die, but slowly dry out. Though not much experience from them.

If the PSU isn't having issues, I wouldn't worry about replacing them.
maduser
05-13-2011, 03:10 PM
Actually I opened the PSU because I suspect it's the source of my problem, I have random shutdowns.
so now I'm doing my homework with it :)
Tator Tot
05-13-2011, 04:02 PM
What makes you suspect that it's the Power Supply?
maduser
05-14-2011, 02:17 AM
it was my PC and it worked flawlessly for years, when I passed it to my wife I replaced the PSU and GPU, and then the problem started.
since then I replaced two HDD, stress test, temp checking, ect'.
my two last options left are the PSU or Mobo, I want to believe it's my PSU.

but that's not the point of my thread, I want to understand if my PSU is decent or peace of junk.
I understand that the capacitors are a big part of that.

so:
1 where this capacitors sits on a 1-5 scale?
2 what other parts should I check?

Thanks
Tator Tot
05-14-2011, 03:04 AM
What model PSU is it? Thats a bigger factor than just one component.
maduser
05-15-2011, 02:30 AM
I know what you mean, but I want to decide that only by the internals :)
maduser
05-16-2011, 01:56 PM
1 where this capacitors sits on a 1-5 scale?
2 what other parts should I check?

Thanks
370forlife
05-16-2011, 04:03 PM
HEC caps are somewhere around a 2, 1 being the worst and 5 being the best. Post up a picture of the internals and we can give you more information.
maduser
05-17-2011, 02:49 PM
http://img269.imageshack.us/img269/7260/dscf1915b.th.jpg (http://imageshack.us/photo/my-images/269/dscf1915b.jpg/)

Uploaded with ImageShack.us (http://imageshack.us)
370forlife
05-17-2011, 04:36 PM
This is a key mouse. I wouldn't say it's terrible, but it's not a high quality power supply.

If you replace all the capacitors it could probably power a low power computer pretty well, otherwise you might want to look at just getting a high quality psu from the start like the Corsair CX430v2.
maduser
05-18-2011, 02:30 PM
It was powering an office PC. I just wanna learn stuff on the internal from you guys,
Can you please explain Why it's not terrible, but it's not a high quality power supply?
Btw: I already replaced the PSU with SS 380W :)

Thanks.
370forlife
05-18-2011, 03:21 PM
The input filter looks complete, I see a bridge rectifier on the input, heatsinks are decently sized, as are the transformers. Cables look to be mostly 18 gauge.

It's a half bridge unit though, which are not as efficient. I can't see what parts are attached to the heatsinks, but I would venture to say it could do 300W for a bit.

The low quality part comes from sub standard quality chinese capacitors and a outdated design.
maduser
05-18-2011, 04:09 PM
Well, you know what you are saying, it is a 350W PSU.

the HEC capacitors are related to HEC, the PSU manufacture?

BTW: what are the symptoms of a dying capacitors?
Elledan
05-18-2011, 05:09 PM
BTW: what are the symptoms of a dying capacitors?

Visually they'll start bulging and leaking. On the output side you're getting high ripple to the point where the system becomes unstable and often crashes among other issues.
370forlife
05-19-2011, 06:06 AM
the HEC capacitors are related to HEC, the PSU manufacture?


No, thankfully.

Here's some info on them:

http://capacitor.web.fc2.com/h.html#hec

http://www.hec.net.cn/About.asp

"Ruyuan Yao Autonomous County of East Sunshine Industrial Development Co., Ltd"

Don't know if thats there actual name or not, but it was under their "about us" section. Quite a mouthful.
maduser
05-19-2011, 03:04 PM
:)
I see, Thank you guys for the valuable information.
capdude71
07-06-2011, 06:04 PM
I had a power supply with bad HEC capacitors - absolutely no visible signs of failure. I only found out they were bad by using my ESR meter; I couldn't even get a reading on one of the caps. I ended up having to replace 9 out of 15 capacitors in the power supply.
TheLaw
07-13-2011, 03:54 PM
Buying replacement caps (for the entire PSU) will probably cost you $20USD shipped...It's really not worth it unless you have a PSU that is very specific to the application, and a replacement would be very expensive.

I recapped a slimline Dell Optiplex PSU which had G-Luxon and some bad Teapos. I would probably just have bought a new PSU if it was a standard ATX sized PSU like yours.

You have a standard size PSU so just get a CX430 v2 or v1 and call it a day.