I need help with MS-6541

[onetime]

My matherboard was made in 2002. It has 10 different types of big capacitors from from 6 different makers: Rubicon, Chemi-con, Panasonic, G-Luxon, TEAPO, and one unknown to me. It is total mix and much. So far I have problem only with TEAPO SM 1000uF 6.3V d=8mm capacitors. Question. Should I replase all of them because matherboard old and I don't want to replase any of them later? Or should I replase only bad one (TEAPO) and known to be bad (G-Luxon), and the one unknown to me? List of capacitors:

Big capacitors:
Rubicon MBZ 2200uF 6.3V d=10mm,
Chemi-con KZE 820uF 25V d=10mm,
Chemi-con KZG 1500uF 16V d=10mm,
Panasonic FJ 1000uF 6,3V d=10mm,
G-Luxon SM 680uF 6,3V d=8mm,
G-Luxon sm 470uF 6.3V d=6.3mm,
G-Luxon sm 100uF 25V d=6.3mm,
TEAPO SM 1000uF 6.3V d=8mm,
TEAPO SEK 470uF 10V d=5mm,
The one with the unknown maker 820uF 4V d=10mm it has yelow jacket with black stripe, letter F with underline and upperline and M 24117.

Small capacitors:
and a lot of small TAEPO and G-Luxon.



Thank you for your answer.

[brainweed]

Re: I need help with MS-6541

I always say if it anit broke dont fix it. Are any of the others showing signs of bulgding? If so replace the bad ones and buldging ones.

[kc8adu]

Re: I need help with MS-6541

change all the teapo and gluxon.
the yellow f cap is a fujitsu polymer and failure is rare.

[stng]

Re: I need help with MS-6541

Yes, just change all the teapo and gluxon. as what kc8adu quoted..

[PCBONEZ]

Re: I need help with MS-6541

I agree about the G-Luxon and TEAPO.

The Yellow/Black Fujitsu's are debatable.
Look close at those.
-
I did 7 Gateway i815 Chipset P3 boards that each had 5 of those F-Caps each. The boards were having various problems. (No boot, never ending reboot, boot then crash.) About 50% of the F-Caps were bloated. When they bloat it is not very pronounced. They use a semi-dry electrolyte and they behave differently. A very small bulge it the top of the can is all you will see and you have to look carefully to even see it.
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I've read that the newer versions of those caps don't have problems but I don't know from what date they got better and I don't know how to de-code their date codes.
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The bad ones on mine were marked [M]15267 and [M]13267 which I assume is the date code (or partly the date code.).
The machines were vintage 2000-2002ish and so possibly the same age as yours.. (i815 chipsets were released in June 2000 and these are B-stepping which was one of the later i815 chipset versions.)
-
Like I said. When they bloat it's very slight so look close.
If the tops of the cans are dead flat then don't worry about them.
They aren't 'usually' a problem.

A number of KZG fails have been reported here and elsewhere. They sometimes go with no bloating. It's suspected they have problems when mounted too near a heat source like the CPU or a MOSFET.
-
I fixed two MSI MS-6399 boards (OEM for Medion. Early P4 using SDRAM. Also around 2002-ish I think.) by just replacing the KZG's. The KZG's were mounted right between the MOSFETS and CPU. There was no bloating or any visual signs at all. The systems seemed to be working fine and then one day they just wouldn't boot. (No nuthin'. Not even fans. From no problems to stone dead over night.)
.

[onetime]

Re: I need help with MS-6541

Should I replace G-Luxon SM 470uF 6.3V d=6.3mm, G-Luxon SM 680uF 6,3V d=8mm, G-Luxon SM 100uF 25V d=6.3mm, TEAPO SEK 470uF 10V d=5mm, TEAPO SEK 33uF 50V d=5mm. They looks OK for now. Does anything less than 470uF usually bulge ? I am planing to buy my replacement capacitors from TopCat, but he doesn't carrying anything like this. I can't use bigger diameter of capacitors because of design of the motherboard.

[acstech]

Re: I need help with MS-6541

Are they Rubicon with an "i" or Rubycon with a "y"? Big difference...

[PCBONEZ]

Re: I need help with MS-6541

Whoa! Yes there is a big difference!
Rubicon is basically fake Rubycon and they are crap.

Replace the G-Luxon. (No further discussion needed with those.)

Teapo sometimes lasts and other times doesn't.
To be safe the 1000uF Teapo -should- go.
-
If the 470uF Teapo is by the USB, sound, network, or PS/2 jack or chip I wouldn't worry about it too much. It's not handling much ripple there. (If any.)
If it is near a MOSFET (Voltage regulator chip) I would replace it too.

>>> Does anything less than 470uF usually bulge? <<<
It happens but less often than bigger caps.

If any of these you are talking about don't have vents then don't worry about them.
They are using a different electrolyte that doesn't cause problems.
Most likely they are coupling caps and don't handle ripple.
[I'm thinking of the 5mm caps as I write this but any with no vents aren't problem caps. - Usually. ANY cap can fail.]

.

[onetime]

Re: I need help with MS-6541

Sorry it is misspelling Rubycon MBZ 2200uF 6.3V d=10mm.

[onetime]

Re: I need help with MS-6541

All of them have vents except TEAPO SEK 33uF 50V d=5mm. Bulged only TEAPO 1000uF 6.3V d=8mm. Near DIMM and AGP. All caps near MOSFET god one. I mean Rubycon, Chemi-con, Panasonic and Fujitsu. G-Luxon SM 470uF 6.3V d=6.3mm, G-Luxon SM 100uF 25V d=6.3mm, TEAPO SEK 470uF 10V d=5mm are located between PCI slots. One G-Luxon SM 470uF 6.3V d=6.3mm are located between DIMM and North bridge. And G-Luxon SM 680uF 6,3V d=8mm in the middle of everything North Bridge, AGP, SMCS chip, FAN connector, CPU 12V power. Too much so I cant relate it to anything.

[PCBONEZ]

Re: I need help with MS-6541

I wouldn't worry about:
TEAPO SEK 33uF 50V d=5mm - no vent
G-Luxon SM 100uF 25V d=6.3mm - probably a coupling cap with that low of uF.
(Unless you just feel like doing them.)

The other Teapo and G-Luxon should probably go.
(I'm failing safe in saying this because I can't see the board.)

G-Luxon is historically unreliable.
Teapo - You have bloated ones already. The whole batch is suspect.

G-Luxon SM and Teapo SEK are almost general purpose caps. Barely even low ESR. They don't even show ESR in their data table, only the ripple rating.
Here they are: ( - ripple )
G-Luxon SM 100uF 25V d=6.3mm - 145
G-Luxon SM 470uF 6.3V d=6.3mm - 280
G-Luxon SM 680uF 6,3V d=8mm - 320
TEAPO SEK 33uF 50V d=5mm - 105
TEAPO SEK 470uF 10V d=5mm - 245

You don't need especially low ESR caps for replacements. Even a low end low ESR series from a good brand will be better than what was originally installed.
VR, PW, PM, LXZ, FC are all rated better than SEK or SM.
.