DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

[jesscat606]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

Followup: this board was still running happily when it was retired recently. For aynyone else needing it, here is what I used.

[jesscat606]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

haha yeah, that fan is pretty loud. And also, that's the inside of the bag.

Thanks, guys, for all your help! I doubt I'd have attempted this without your advice!

[kc8adu]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

i fix a lot of those and the worst complication is a vrm fet failure that sometimes totals the board.
if it posts its fine.
as for the fan who cares.it needs all the help it can get in an exporter.
slap it together and put it back on the air.
rebuild the power supply as an "oh shit" spare.
i use panasonic fm in those.
its just a fsp with a connector added custom.

[c_hegge]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

^
I didn't pick up on that on the picture, but yes, it is true. Don't test stuff on Anti-static bags or foam. I usually use a motherboard box for that.

EDIT: 5200RPM? That CPU fan must sound like a jet engine.

[Bungz]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

Looks good.

But just so you know the outside of anti static bags can be conductive.

[jesscat606]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

^
The small 6mm ones aren't usually under a lot of stress, and so they may not be a problem, but OST aren't a reliable brand. The Nichicon HMs may also be a problem if they are older than 2005. The date codes are usually something like H0324 or A0324 (which would mean 2003, Week 24)

The Nichi's are all 06's.

[jesscat606]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

Looks good! The caps all look like they are installed correctly. Fire it up and see how it goes.

Looks good. Voltages booted up pretty close:
+1.5 = 1.5
+3.3 = 3.39
+5.0 = 5.18
+12.0= 12.09
-12.0 = -12.28
5VSB =5.06



I'll let it run for a while on the test bench - any other burn-in procedures I need to know about?

[c_hegge]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

^
The small 6mm ones aren't usually under a lot of stress, and so they may not be a problem, but OST aren't a reliable brand. The Nichicon HMs may also be a problem if they are older than 2005. The date codes are usually something like H0324 or A0324 (which would mean 2003, Week 24)

[jesscat606]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

Nice job! Any reason you chose not to replace the 5 or so 6.3mm OST caps, most of them near the northbridge?

As far as I know, only the KZGs are known problem causers. I only replaced those. Are there issues with the OST caps too?

[mockingbird]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

Nice job! Any reason you chose not to replace the 5 or so 6.3mm OST caps, most of them near the northbridge?

[c_hegge]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

Looks good! The caps all look like they are installed correctly. Fire it up and see how it goes.

[jesscat606]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

Bam!

Now to see if it will boot back up. Here's hoping I didn't screw it up!

[jesscat606]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

^
Really? Which ones did you get? The leads on all polies I've seen have been the same 0.6mm as HM.

Actually, I need to retract that last. I was thinking the leads were too big; what happened was I was getting leftover solder in the mounting holes, not letting me get the new caps in. which is being a real PITA, because these caps mount on a huge copper plate (on both sides of the board!) and it's almost impossible to heat it long enough to use my solder sucker.

Bullshit!!

You can get a 5960X with an X99 motherboard for less than that!

Yes, well, this is in an HD Radio encoder; it's got a custom, proprietary linux build that expects all the IRQ / PCI / Northbridge / Southbridge / CPU settings of this motherboard.

So I'm pretty much stuck with this specific motherboard. Which, since it's long since discontinued, is horrifically expensive.

[RJARRRPCGP]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

wanted $2000 to replace the MB

Bullshit!!

You can get a 5960X with an X99 motherboard for less than that!

[c_hegge]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

^
Really? Which ones did you get? The leads on all polies I've seen have been the same 0.6mm as HM.

[jesscat606]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

So, I picked up the Panasonic polys, just got them...and the leads are 1.2mmm wide - and won't fit the holes. Returning them and will likely go with the HMs - which have 0.6mm leads.

[mockingbird]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

overkill? I note that those are 1000uf, not 1500...is there a reason this is ok, other than that's the nearest size Digikey has? (I'm not tied to digikey, I'm just more familiar with them.)

Because when you replace VRM high caps, you usually use polymer equivalents with a much much lower capacitance. This has mainly to do with the fact that 16V polymers don't go very high in capacitance, especially at 8mm. Since yours are 10mm, I chose 1000uF to be safe, eventhough you can probably use as low as 270uF here.

The reason that you can get away with this on the VRM high, is that with the VRM high, low ESR and high ripple are important, and not bulk capacitance, or at least that's what I have been told.

these are all 2.5v, not 6.3v. The only 1500uf/6.3v/8mm polys i saw were smd.

Pentium 4 VCore is less than 1.5V. That's why 2.5V is more than sufficient on the VRM low. If you bought 6.3V ones in 8mm, you'd just be spending a whole lot more money for no reason.

Are there any likely problems or concerns with mixing poly/non-poly caps on a board? I like the extended life of the polys, but don't wanna cause issues.

Nope. At least not in your case.

I've done it myself. I have an Asus P5B I use almost on a daily basis. For the VRM high, I used ordinary Nichicon HM, and for the VRM low, all UCC PSC 2.5v 820uF polymer caps.

[jesscat606]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

i think you meant those 4 caps were 16v, not 6.3v. So for the 16v 1500uf caps, here are the choices:
this, this, or this. (nichicon hm/hn)

if you want to experiment with polymer, this, or this should work, maybe even overkill.

overkill? I note that those are 1000uf, not 1500...is there a reason this is ok, other than that's the nearest size Digikey has? (I'm not tied to digikey, I'm just more familiar with them.)

for the 10 6.3v 1500uf capacitors:
this, this, this, this, or this.

Polymer:
this, this, or this.

these are all 2.5v, not 6.3v. The only 1500uf/6.3v/8mm polys i saw were smd.

for the 2 short 1500uf caps:
this, or this.

Polymer:
this, this, this, or this.

Those look like they would work.

Are there any likely problems or concerns with mixing poly/non-poly caps on a board? I like the extended life of the polys, but don't wanna cause issues.

-j

[mockingbird]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

1500uf 8x20mm marked 5(7) 7S- 10
1500uf 10x20mm marked 6(7) 6G - 4
1500uf ~10x12mm marked 6(k) 8E - 2
470uf ~5x11mm marked 5(k) 6c - 3
470uf ~5x11mm marked 5(k) 6V - 3

I think you meant those 4 caps were 16V, not 6.3V. So for the 16V 1500uF caps, here are the choices:
this, this, or this. (Nichicon HM/HN)

If you want to experiment with polymer, this, or this should work, maybe even overkill.

For the 10 6.3V 1500uF capacitors:
this, this, this, this, or this.

Polymer:
this, this, or this.

For the 2 short 1500uF caps:
this, or this.

Polymer:
this, this, this, or this.

[jesscat606]

Re: DFI-ITOX G4S600-B with Chemicon KZGs - compatible caps?

You should use HM/HN/HZ. You mentioned you were looking at Digikey. They may or may not have what you need in an electrolytic cap. You might try doing a polymer re-cap.

Since this machine seems to be from 2006, it's robably worthwhile to have a look inside the PSU to check if the caps in there are OK. That way, you can order both the motherboard and PSU caps together and save on shipping.

Yeah, this is an old machine. as I had noted above, I had already replaced the PSU with a new one a number of months ago...wasn't looking for cap problems at the time, so didn't notice them.


Several people have mentioned going with polymer caps. I dunno much about them - would something like this work?

EDIT: Oh, wait, that's SMD - not the right mounting style.

Digikey doesn't seem to have the HM/HN/HZ caps, you're right.