EVGA = Crap??

[bigbeark]

So i bought an EVGA Socket 939 board, 133-K8-NF41, off ebay. Seller admitted it had one blown cap.

It arrived yesterday, and EVERY cap on the board is SACON, except for the VRM caps which are 10mm 1500uf 2.5v LELON solids.

I expect I will replace every one of the caps on the board.

The SACONS are FZ63 1500 6.3V and FZ57 470uf 16V and one FZB 470uf 16V. These are made to look like solids but are vented. All 10mm,

There are also 2 of the (SOYO leftover?) shiny 1500uf 10v.

Also 2 little spring loaded push-button switches marked "power" and "reset" as well as
a goofy looking 2-digit LED.

This is a SLI board with two x-16 PCI-E slots.

Anyone care to suggest suitable replacement caps?

Obviously EVGA is not trying for high-quality!

[mockingbird]

Re: EVGA = Crap??

nForce 4 right? nForce 4 is ok and worth fixing, unlike all the later nForces which have defective substrate engineering.

No why exactly would you BUY a board like this? Sure it has two PCIe x16 slots, but don't you know how old 939 is? Also I believe these boards are DDR, at least the A8N-E board I recapped recently was.

Besides the Sacon FZ, list the brand and series of the other caps.

[c_hegge]

Re: EVGA

He did. They are ALL sacon FZ except the ones on the VRM, which are Lelon polys (probably OCR)

[yyonline]

Re: EVGA = Crap??

Anyone care to suggest suitable replacement caps?

Badcaps.net doesn't carry anything that can replace the 16V 470uF FZ in 10mm. The options in the US are polymer from digikey or 10mm Nichicon HN from mouser. I'm not sure what stores will ship to Canada.

Specs for 10x12.5mm FZ:
ESR: 22 mOhms
Ripple: 1800 mA

Badcaps carries suitable replacements for all other values of FZ though. For the 8mm diameter FZ, you can use Rubycon MBZ/Samxon GC or equivalent. For the 10mm FZ, get MCZ/GC.

[bigbeark]

Re: EVGA = Crap??

nForce 4 right? nForce 4 is ok and worth fixing, unlike all the later nForces which have defective substrate engineering.

No why exactly would you BUY a board like this? Sure it has two PCIe x16 slots, but don't you know how old 939 is? Also I believe these boards are DDR, at least the A8N-E board I recapped recently was.

Besides the Sacon FZ, list the brand and series of the other caps.

It's a hobby. I like old technology. I do have newer boards, I am writing this reply on a newish AM2 board. For my purposes, which do NOT involve using a 50-inch TV as a monitor or getting max frame rates on a video game, 939 is just fine.

Markings on the LELONs are OCR and L545(M)
I see there are also three 16v 330uf LELONS of the same type.

Are LELONS crap caps too?

The shiny SACONS are SZ603 - that's all the markings on these.

[ratdude747]

Re: EVGA = Crap??

Badcaps.net doesn't carry anything that can replace the 16V 470uF FZ in 10mm. The options in the US are polymer from digikey or 10mm Nichicon HN from mouser. I'm not sure what stores will ship to Canada.

Specs for 10x12.5mm FZ:
ESR: 22 mOhms
Ripple: 1800 mA

Badcaps carries suitable replacements for all other values of FZ though. For the 8mm diameter FZ, you can use Rubycon MBZ/Samxon GC or equivalent. For the 10mm FZ, get MCZ/GC.

yes he has the 470uf 13v in samxon and rubycon. his list has been much expanded...

[c_hegge]

Re: EVGA = Crap??

The rubycon caps topcat has are MBZ, whose ripple is a bit lower rated than the FZ. However, I would just go for it anyway and assume the FZs were overkill. Many motherboards use MBZ or equivilant, (or even lower grades at times) and it works fine.

[yyonline]

Re: EVGA = Crap??

yes he has the 470uf 13v in samxon and rubycon. his list has been much expanded...

Topcat has MBZ/GD in 8mm, which aren't spec'd well enough to replace the 10mm FZ. He carries 10mm 470uF Samxon GT, but those aren't good enough either.

The rubycon caps topcat has are MBZ, whose ripple is a bit lower rated than the FZ. However, I would just go for it anyway and assume the FZs were overkill. Many motherboards use MBZ or equivilant, (or even lower grades at times) and it works fine.

8mm MBZ is close enough to 8mm FZ, but 8mm MBZ is nowhere close to 10mm FZ.

I'm all for supporting the site whenever possible, but in this case, nothing in the store at the moment works.

[mockingbird]

Re: EVGA = Crap??

Nichicon HM or HN from Mouser... They ship to Canada. Make sure to indicate the cheapest shipping option. Only $8, but takes around a week. Cheaper than Digikey and Newark, and in fact, the cheapest shipping of them all.

[PCBONEZ]

Re: EVGA = Crap??

https://www.badcaps.net/forum/showpo...88&postcount=2

Depends on which FZ you have.
Panny FM are good for some, for others you need at least MBZ grade.

[PCBONEZ]

Re: EVGA = Crap??

You didn't check the forum before you bought that did ya...
-
https://www.badcaps.net/forum/showth...hlight=evga+fz
https://www.badcaps.net/forum/showth...hlight=evga+fz

[bigbeark]

Re: EVGA = Crap??

You didn't check the forum before you bought that did ya...
-
https://www.badcaps.net/forum/showth...hlight=evga+fz
https://www.badcaps.net/forum/showth...hlight=evga+fz

Got me! No, didn't check. I mis-measured the 470uf 16v - they are 8mm.
I have Panny FM on hand to cover those, although they are a bit taller.

I was hoping to use 6.3v 1500uf MBZ 10x12.5mm that I have on hand, but note Ripple is only 1540 vs 1800 for the FZ. I also have 1500uf 16v MBZs which are taller, but who cares.

I am dubious of the quality of the LELON solids in the VRM. Are there any spec sheets on these? Series is OCR as mentioned above. Thanks to all for
your help.

[bigbeark]

Re: EVGA = Crap??

I found the LELON spec sheets: http://www.lelon.com.tw/index.php?fn=product&id=1.

They claim ESR 8 and Ripple 5500 for the 1500uf 2.5v 10x12.5mm.
So that impedance is theoretically 01 on my 2-digit ESR meter?

The 330uf 16v 10x12.5mm are listed as ESR=14 and Ripple = 5050.

Replace these or keep?

[mockingbird]

Re: EVGA = Crap??

Keep polymers. I've never heard of junky polymers, even from companies that are known to make junk.

Just curious about the ESR. Do they mean the ESR is 0.008 and 0.0014?

[bigbeark]

Re: EVGA = Crap??

Yes, the charts say that ESR rating is expressed in milliohms, so .014 and .008
should be the correct ESR values. I wonder if 2-digit ESR meters round up?

[mockingbird]

Re: EVGA = Crap??

Who knows, but as long as it's not reading high, it's good. You're safe to replace the Sacon FZ with Rubycon MBZ or Nichicon HM.

If you want an exact replacement, search for Sacon FZ, the datasheet has been posted inline and as an attachment many times.

[ratdude747]

Re: EVGA = Crap??

Keep polymers. I've never heard of junky polymers, even from companies that are known to make junk.

Just curious about the ESR. Do they mean the ESR is 0.008 and 0.0014?

iirc KC said that he has seen junk polies short out....

[TheLaw]

Re: EVGA = Crap??

iirc KC said that he has seen junk polies short out....

FZs suck as well.

[Rulycat]

Re: EVGA = Crap??

iirc KC said that he has seen junk polies short out....

How can they not even make polies right?

[PCBONEZ]

Re: EVGA = Crap??

I don't buy the implied conclusion.... Not without a LOT more details.

Poly found bad might have more to do with their environment than -what- they were.

KC works on some industrial equipment that gets a lot more abuse than a PC.
[Context: PC = PERSONAL Computer, as opposed to an industrial/commercial computer.]

A bad environment can blown anything as proven by many times over by Rubycon Lytics popping their tops in Dell SFF/USFF PCs.

- Are Rubycon lytics therefore bad/junk because they sometimes blow up in extreme environments?

That is the same cause/effect assumption/conclusion you are making about those shorted Polys.
.