PSU worth replacing caps?

[stj]

Re: PSU worth replacing caps?

In like 60 % cases there are D10 caps used. Than >35 % D8, <5 % D12,5. So I guess "normal" (by definition) is D10. .

when i said "normally" i meant from parts suppliers.
we both know these bastards making psu's have a habit of ordering custom size parts or using caps that probably arent close to what's printed on them.

[Behemot]

Re: PSU worth replacing caps?

also that 10mm 3300uf cap would normally be 12.5mm

In like 60 % cases there are D10 caps used. Than >35 % D8, <5 % D12,5. So I guess "normal" (by definition) is D10. The other thing of course is that besides two special types - Samxon RS and Chemi-Con KZN both which I posses - you won't get that from any quality manufacturer.

Same with D8 longer than 20 mm. They now make pen caps in D10 so you can get caps as long as 50 mm but we will have to wait till they come out with brand new D8 pencaps nobody thought about before (besides chinese brands which have them for 10 years already and I am suggesting this can for over a year now).

And no, he won't fit D12.5 caps instead of D10 and D8 instead of D10 simultaneously. I already asked about KYA 3300/6,3s instead of those custom D8x30 and it would at least not be easy (or maybe impossible) to fit them, no way all of them. Because as you can see, it is 1,1kW unit in quite small chasis, that means it is frelling crowded inside already.

And personally, I would suggest you to get some of those 3300/16 caps I have as Panasonic will not make such capacitance in D10x30 for at least another decade. They just don't do custom stuff and don't care about ATX power supplies at all. How often do you see Panasonic caps on PSU secondary? One of 20 units (lets think quality caps used only)? It is 80 % Chemi-Con, 18 % Rubycon and maybe 2 % the rest. And while you will be at it, you can take some of those KYB 2200/16 I'll get in about 2 months as they are equal to your belowed Panasonic caps but I have everything much cheaper than those thieves from Farnell, Digikey, Distrelec, TME and all the others.

You know what? One such smaller local reseller, the GES Electronics, resell the same Chemi-Con KXJ 150/400 caps as I do. We both take them from the same distributor in same numbers and for the same price. I am 43 % cheaper even adding VAT (which I will soon start applying, so for non-VAT payer, I am now almost 60 % cheaper). And believe me, I already have very nice margin. To give you some idea, my expectation based on this experience is all these big-reseller thieves usually start their prices on three times (and more) the buying price, regarding these capacitors we talk about.

[stj]

Re: PSU worth replacing caps?

i dont know anything about the ones behemoth listed,
i'm only really used to panasonic's range and about 20% of rubycon's range.

he was listng nippon-chemicon part numbers.

[mikay786]

Re: PSU worth replacing caps?

Thanks again stj

what would be best these Panasonics or the stuff behemoth posted?

Farnels is only 20mins away so useful.

[stj]

Re: PSU worth replacing caps?

they usually touch in modern supplies even when they are the right size.

if you can fit 10mm then look at the list: D&H can use the same part number as E
C would be EEUFR1C332L IF you can fit 12.5mm in.

[mikay786]

Re: PSU worth replacing caps?

Does it matter if they touch? its tight but I can squeeze 10mm ones in there

[stj]

Re: PSU worth replacing caps?

double check that if i where you.
you have some 10mm caps - see if you can fit them in the 8mm spaces.

also that 10mm 3300uf cap would normally be 12.5mm

[mikay786]

Re: PSU worth replacing caps?

any 10mm ones, as should be able to fit

[stj]

Re: PSU worth replacing caps?

not panasonic i dont.

i could look at some Rubycon and NCC etc datasheets later.
but those 8mm ones are a bastard, those ratings are usually 10mm in diameter.

[mikay786]

Re: PSU worth replacing caps?

Thanks stj,

A) 2 x Toshin Kogyo 3300uF 10v (UTWKZ) 10mm > EEUFK1A272L <2700uf
B) 1 X Toshin Kogyo 2200uF 16v (UTWKZ) 10mm > EEUFK1C222L
E) 2 x Samson 2200uF 10v (SGF) 10mm > EEUFR1A222L
F) 1 x Samson 470uF 16v (SKM) 8mm > EEUFR1C471
G) 1 X Samson 220uF 16v (SKM) 6.3mm > EEUFR1C221
I) 2 x Capxon 47uF 25v (C729) D 5.2mm H 12mm > EEUFR1E470
J) 1 x Samson 22uF 50v (SKM0702) D 5.2MM H 12mm > EEUFR1H220

C) 2 x Capxon 3300uF 16v (C725) D 10mm H 30mm
D) 1 x Capxon 2200uF 10v (C723) D 8.2mm H 25mm
H) 1 x Samson 2200uF 10v (SGF0702) D 8.2mm H 30mm

Did you have anything for C/D/H?

[stj]

Re: PSU worth replacing caps?

I) 2 x Capxon 47uF 25v (C729) D 5.2mm H 12mm > EEUFR1E470
J) 1 x Samson 22uF 50v (SKM0702) D 5.2MM H 12mm > EEUFR1H220

[mikay786]

Re: PSU worth replacing caps?

Behemot, got to a 3 smaller caps and removed them

I) 2 x Capxon 47uF 25v (C729) D 5.2mm H 12mm
J) 1 x Samson 22uF 50v (SKM0702) D 5.2MM H 12mm

[mikay786]

Re: PSU worth replacing caps?

Cheers guys, much appreciated

[Pentium4]

Re: PSU worth replacing caps?

This is a good PSU. It'll do its rated wattage. Maybe only @25C but still. It's the same platform as this ePower:
Only full bridge unit I've ever seen. Did yours come with a San Ace fan?

Samson caps are horrible, I'd put them down there with Jee/Rulycon. Glad you're replacing all the caps! I'd be curious to know the capacitance and ESR of the caps you pulled.

[stj]

Re: PSU worth replacing caps?

these tests are run for hours at the most, not days or weeks.

[Behemot]

Re: PSU worth replacing caps?

KYBs 2200/16 (D10x30) are on the way though it is getting somewhat longer. I expect them by late august/beginning of september.

Finally just got oder confirmation, they say delivery date is late october, eh…they should come with KZH 1200/6,3 (D8x15) and KYB 680/35 (D10x20).

ATX labels are full of lies.

What do you mean? That they have not actually loaded the unit with 1100 watts and they've been actually daydreaming and it burned at 800 watts or? http://www.hardocp.com/article/2008/...6#.VZ_N1ENIX6M

[stj]

Re: PSU worth replacing caps?

ATX labels are full of lies.

[Behemot]

Re: PSU worth replacing caps?

Wut?

[stj]

Re: PSU worth replacing caps?

you are far too trusting in labels.
i dont think i trust the label on anything after AT supplies.
AT stuff was well built and honest about power output.

[Behemot]

Re: PSU worth replacing caps?

There is no reason to use only 2200uF caps in 1100watt unit, I wonder why they even used them, its way too small capacity.

I searched for some reviews, there are not many, HardOCP measured 60 mV on +12 V, TweakTown about 100 mV on similar platform in Tagan.