Help for repair Gigabyte GA-7VT600-1394

[PCBONEZ]

Re: Help for repair Gigabyte GA-7VT600-1394

You're welcome and CONGRATS.

Yes, the 6.3mm 470uF 6.3v RGA and NHG are an exact match on ripple, that was a good choice.
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[panegiricus]

Re: Help for repair Gigabyte GA-7VT600-1394

i leave the intention of recapping this boad for a while, but now i need absolutely to recap it. Rubycon MBZ/MCZ are over, ZL/ZLG are low ESR but not motherboard grade. Nichicon HZ seems good, what can i use. for this board at the best, with the best number of hour?

[PCBONEZ]

Re: Help for repair Gigabyte GA-7VT600-1394

ZL/ZLG are low ESR but not motherboard grade.

Who told you that? -- That isn't the least bit true.
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ZL/ZLG are FULLY 'motherboard grade' caps.
They are in fact OFTEN used on Server motherboards.

Nichicon HZ seems good, what can i use. for this board at the best, with the best number of hour?

HZ are usually overkill anywhere except in Vcore and even there they are usually overkill, just not as far over.
On motherboards overkill usually doesn't hurt anything but after a point it isn't helping anything either.

Not every cap on a motherboard is [or needs to be] the same grade.
In other words 'motherboard grade' isn't one grade, it's many grades over a range of grades.

ZL is of the grade that is most commonly used.
They aren't suitable for Vcore since P4 came out but they are appropriate about everywhere else on a modern mobo.
In the P3 era they were appropriate (and common) even in Vcore.

Maybe this will help. - ALL of these are 'motherboard grade'.
There are 11 grades shown. They are ALL 'Motherboard Grade'.
But that don't mean they are all suitable anywhere on a mobo.
https://www.badcaps.net/forum/showpo...1&postcount=17
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[PCBONEZ]

Re: Help for repair Gigabyte GA-7VT600-1394

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When it comes right down to it all "Motherboard Grade" means is "Low ESR".
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And there are MANY grades of Low ESR.
I broke it up into 11 grades.
Someone else might break it up into 4 or 5 grades and a 3rd tech might end up 15-16 grades.
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Point is 'Motherboard Grade' and 'Low ESR' are very general non-specific terms.
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[c_hegge]

Re: Help for repair Gigabyte GA-7VT600-1394

Generally, I call Ruby ZL or similar "Motherboard grade", and MBZ or MCZ or similar "CPU VRM Grade" It helps with confusion when it comes to caps which can't be used on the VRM, but are OK elsewhere on a motherboard.

[PCBONEZ]

Re: Help for repair Gigabyte GA-7VT600-1394

Generally, I call Ruby ZL or similar "Motherboard grade", and MBZ or MCZ or similar "CPU VRM Grade" It helps with confusion when it comes to caps which can't be used on the VRM, but are OK elsewhere on a motherboard.

I did that at first too.

The problem is that only works for a specific range of boards so every time a board comes up that's out of that range people still get confused.
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For example on an old P3 or a board that uses a low power CPU (Pentium-M, Atom) ZL are usually good enough to be used in Vcore.
[It depends on how -many- caps are used there too.]
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ZL grade are almost always good enough for the high side of the VRM.
I've seen ZL or KZE (same grade) used in VRM-high on many socket 771 dual CPU Server boards.

Usually it's only the Vcore caps on that -have- be better than the run of the mill mobo cap -has- to be.

What I'm trying to get across..
There are usually two grades used in "CPU VRM" and they are several grades apart.
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[panegiricus]

Re: Help for repair Gigabyte GA-7VT600-1394

Then, what can i choose at the best, for 3300uF between

Nichicon HN/HZ
Rubycon ZL/ZLG/ZLH/ZLJ
Panasonic

I find Suncon 6ME3300WX , in the datasheet Sanyo, with a ESR of 0.021 and Ripple of 2.36 A. What can you tell me about?

[PCBONEZ]

Re: Help for repair Gigabyte GA-7VT600-1394

Then, what can i choose at the best, for 3300uF between

Nichicon HN/HZ
Rubycon ZL/ZLG/ZLH/ZLJ
Panasonic

I find Suncon 6ME3300WX , in the datasheet Sanyo, with a ESR of 0.021 and Ripple of 2.36 A. What can you tell me about?

I don't think you understand yet.
We need more information from you to know what 'best' is.
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Not all caps on a motherboard have the same job.
The grade you need will be different depending on the job it is does.
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Since you haven't shown or told us were it is on the motherboard no one here knows what job it does.
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The other way to figure out what you need is to look up the specs for the old cap but you haven't told us what the old cap is either.
We would need brand/series/uF/volts/diameter[in mm] to look it up in a data sheet.
Sometimes the length is needed too.
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[panegiricus]

Re: Help for repair Gigabyte GA-7VT600-1394

Ok PCBONEZ.

this motherboard have

4x 3300uF 6.3v Nichicon HM
3x 1500uF 6.3v Nichicon HM
2x 1200uF 6.3v Nichicon HM
10x 1000uF 6.3V Rubycon MBZ

This board would be used as ide hd recovery station, as before the atx plug melt.
I only want to be shure to put the right caps in each point.

[PCBONEZ]

Re: Help for repair Gigabyte GA-7VT600-1394

Okay.

Unless this is an old Pentium-III era board there should be at least 3 or 4 16v caps.

If your ATX plug melted there is probably a problem more serious than caps.
I would inspect for bad MOSFETs or other components that look burned or cracked.
A fully-shorted cap could possibly do that too if it is connected straight to one of the rails.

Those are 'good brand' caps [unless the HM have date codes from 2001-2004.]
It's unusual for them to go bad.
Probably not a problem. But I can't say that for sure.

You didn't give diameter so check that is okay on you own before you order anything.
MBZ and HM are the same grade.
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All these are equivalent good brand caps - if the can size is close to the same.
Sanyo/Suncon WG
Rubycon MBZ
Nichicon HM [don't use if dated 2001-2004]
Panasonic FJ
Samxon GD
Nic Components NRSK, NRSJ

These are one grade better
Rubycon MCZ
Nichicon HN
Samxon GC
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These are two grades better but over-kill.
[I would either not use these or only use them right next to the CPU - Vcore caps.]
Nichicon HZ
Samxon GA

Considering the melting issue some good photos would be a grand idea.
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