Power supply build quality pictorial. part 2

[Pentium4]

Re: Power supply build quality pictorial. part 2

Yeah, and a CapXon/Teapo need all the help they can get when it comes to heat

[goodpsusearch]

Re: Power supply build quality pictorial. part 2

Capxon never last too long. But I own psus from 2000 with Teapo caps that are in perfect condition.

[tom66]

Re: Power supply build quality pictorial. part 2

Though I have pulled a few bulged Teapo from relatively unstressed environments so I view them with scepticism. Better than CapXon but not much better...

[mariushm]

Re: Power supply build quality pictorial. part 2

I've posted a detailed mini-review/teardown of Tenma 72-8695 linear power supply on EEVblog :

http://www.eevblog.com/forum/product...view-teardown/

It's a 2x 32v @ 3A / 1x64v @ 3A (adjustable) + 5v@2A fixed output psu.

Not gonna post it a second time here but if you want to see it follow the link.

[Pentium4]

Re: Power supply build quality pictorial. part 2

Yeah they're definitely better than CapXon, the reason I say it in this situation is because the Teapo is on the 5VSB

Edit: I found this hilarious. We had a Bestec that came in that I fixed just for our linux machine, the CapXon on the 5VSB died so it wouldn't boot up. I put a Teapo on there just to see if it would work and it did. So I just let it power our Pentium 4 machine, integrated graphics and a USB drive for the OS. I left all the other CapXon's because none of them were bulging. Just 3 weeks later I shine a flashlight in there and I see one bulging and leaking out the top LOL. The thing has been blowing out room temperature air the entire time. It's funny how bad they are. Might as well recap it.

[goodpsusearch]

Re: Power supply build quality pictorial. part 2

Yeah they're definitely better than CapXon, the reason I say it in this situation is because the Teapo is on the 5VSB

Edit: I found this hilarious. We had a Bestec that came in that I fixed just for our linux machine, the CapXon on the 5VSB died so it wouldn't boot up. I put a Teapo on there just to see if it would work and it did. So I just let it power our Pentium 4 machine, integrated graphics and a USB drive for the OS. I left all the other CapXon's because none of them were bulging. Just 3 weeks later I shine a flashlight in there and I see one bulging and leaking out the top LOL. The thing has been blowing out room temperature air the entire time. It's funny how bad they are. Might as well recap it.

And still Corsair uses them in psus......

[Pentium4]

Re: Power supply build quality pictorial. part 2

And still Corsair uses them in psus......

Man, what a shame if they were to use crap caps I'd at least want OST in there

[delaware74b]

Re: Power supply build quality pictorial. part 2

And still Corsair uses them in psus......

It depends on the series, but Corsair used UCC's in the TX series 650w Seasonic-based power supply. I posted photos in post #286 in this thread.

[momaka]

Re: Power supply build quality pictorial. part 2

Edit: I found this hilarious. We had a Bestec that came in that I fixed just for our linux machine, the CapXon on the 5VSB died so it wouldn't boot up. I put a Teapo on there just to see if it would work and it did. So I just let it power our Pentium 4 machine, integrated graphics and a USB drive for the OS. I left all the other CapXon's because none of them were bulging. Just 3 weeks later I shine a flashlight in there and I see one bulging and leaking out the top LOL. The thing has been blowing out room temperature air the entire time. It's funny how bad they are. Might as well recap it.

I had a very similar experience with CapXon, also in a Bestec....

A friend of mine gave me his old Bestec ATX-250 12Z because it wouldn't work. Problem: bulged 16V 1000uF CapXon KM on the -12V rail. So, like you, I changed only that cap (with a used Sam Young 16V 1000uF general purpose 105C rated cap!) to see if the PSU would work and it did. A month later, with the PSU seeing no use at all, I plugged it in an old PC with an AMD Duron 750 MHz CPU. Within minutes, my room started to stink like dead fish. I opened it up and what did I see??? - another bulged 16V 1000uF CapXon KM, this time on the 12V rail.

The 3.3V, 5V, and 5VSB rails on that PSU are all Teapo and they seem to be in good shape too.

I think CapXon really is one of the worst cap manufacturers, probably down with Rulycon and Sacon/Evercon.

[Wester547]

Re: Power supply build quality pictorial. part 2

In this post, everell details out why it's very likely that Bestecs fail so quickly - hot diodes, bad capacitors, and components being crowded into too small a space + shoddily designed circuit + keeping 5VSB on = expedited PSU death. While some are in disagreeance with that explanation I think it's the most sound and I also believe it. Teapo will probably do okay so long as they're kept away from heat and stress, especially the low ESR ones (like the SC series). Yes, though, it sounds as though Capxon are as bad as the worst of the worst - BH, Choyo, Fuhjyyu, Evercon, Rulycon, and like so...

[Pentium4]

Re: Power supply build quality pictorial. part 2

I had a very similar experience with CapXon, also in a Bestec....

A friend of mine gave me his old Bestec ATX-250 12Z because it wouldn't work. Problem: bulged 16V 1000uF CapXon KM on the -12V rail. So, like you, I changed only that cap (with a used Sam Young 16V 1000uF general purpose 105C rated cap!) to see if the PSU would work and it did. A month later, with the PSU seeing no use at all, I plugged it in an old PC with an AMD Duron 750 MHz CPU. Within minutes, my room started to stink like dead fish. I opened it up and what did I see??? - another bulged 16V 1000uF CapXon KM, this time on the 12V rail.

The 3.3V, 5V, and 5VSB rails on that PSU are all Teapo and they seem to be in good shape too.

I think CapXon really is one of the worst cap manufacturers, probably down with Rulycon and Sacon/Evercon.

Ha, that's hilarious! This one was also a Bestec ATX-250 12Z and the one that just failed was a 1000uf 16V on the 12V rail. KF series

[Pentium4]

Re: Power supply build quality pictorial. part 2

I was going to replace the primaries on the Bestec too, so I took off the CapXon intending to replace them with YC's that looked beefier, but the CapXon feels like it ways more than the YC. The YC is a little shorter but a lot wider. Which do you think would be better? It's just for a 250W PSU but I still want to use the better one. Unfortunately I don't have a capacitor meter

[Behemot]

Re: Power supply build quality pictorial. part 2

YC for me

[Th3_uN1Qu3]

Re: Power supply build quality pictorial. part 2

YC for me too. They aren't great caps, but so far i've found them to be better than CapXon (any series) or Samxon GF. I'd say they're about on par with Teapo/G-Luxon.

[tom66]

Re: Power supply build quality pictorial. part 2

Only thing is the YC tend to fake the capacitance. https://www.badcaps.net/forum/showthread.php?t=19638

[Pentium4]

Re: Power supply build quality pictorial. part 2

Yeah, doesn't CapXon fake them too? If they're on par with Teapo at least then I'd rather use the YC

[tom66]

Re: Power supply build quality pictorial. part 2

Yeah, doesn't CapXon fake them too? If they're on par with Teapo at least then I'd rather use the YC

CapXon and Teapo are probably honest as they are seen in most consumer stuff too, not cheap power supplies. I don't think you could long get away with lying about capacitance if you were selling to everyone. I haven't seen YC caps outside of crappy power supplies. I don't know if they are some kind of in house brand? Or variant just for L&C? Or just have a contact with the company?

[Pentium4]

Re: Power supply build quality pictorial. part 2

CapXon and Teapo are probably honest as they are seen in most consumer stuff too, not cheap power supplies. I don't think you could long get away with lying about capacitance if you were selling to everyone. I haven't seen YC caps outside of crappy power supplies. I don't know if they are some kind of in house brand? Or variant just for L&C? Or just have a contact with the company?

Yeah, that's a very good point!
Edit: I found some 560uf 200V OST's, I'll just use those. The leads on the YC's after desoldering were too short anyways

[goodpsusearch]

Re: Power supply build quality pictorial. part 2

Yeah, doesn't CapXon fake them too? If they're on par with Teapo at least then I'd rather use the YC

No. Capxon makes awful caps but when they are new they always are in specs

[tom66]

Re: Power supply build quality pictorial. part 2

I do however recall the story of older Vestel LCDs having fake primary capacitors... supposed to be 220uF at 450V but actually turned out to be closer to 100uF at 450V... they found out for real when they went BANG after about a year.