Re: Failed MCZ rubycons
ELNA is a large vendor, and their capacitors are used in a lot of high-end equipment. I wouldn't touch the HM(M) series, much like KZG or MCZ.
No point of risk when you can get something better like panasonic or sanyo.
Absolutely not. The MBZs (which are much larger than the MCZs) are set to take most of the heavy load, and they are not going bad at all!
System board manufacturers design the boards in a very specific manner. If the MCZs failed catastrophically (along with the cruddy KZGs!),...
EIBM
MBZ > KZG
Last Activity: 09-07-2012, 10:12 PM
Joined: 04-04-2012
Location: AB
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Re: Failed MCZ rubycons
Six years for a rubycon? The rubycon capacitors in my 5150's PSU are thirty years old and they're fine. I quite like those "baby blue" ones. And, I have working marcons and sanyos which are over 34 years old.
Granted I understand what you mean, products today are manufactured to be rated for a specific lifetime. But the question remains why MCZs are getting this [B]notoriety for failing[/B] when other ones aren't (KZG excluded, they are awful caps to begin with)...
Some of these thinkcentres were subject to...Last edited by EIBM; 09-02-2012, 08:46 PM.Leave a comment:
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Re: replaced bad caps on psu whats next
It's also possible that went the PSU failed, it could have damaged some ICs.Leave a comment:
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Re: Failed MCZ rubycons
Okay here are the images.
In the first '06 thinkcentre, you'll notice the 1500uF MCZs have blown (it's more difficult to see the burnt electrolyte on the photo). The ones circled in blue show no physical signs of bursting. I've observed a multitude of these same machines with the same MCZs, and [U]ALL[/U] of them exhibit exploding 10v @ 1500uF MCZs.
In this '05 thinkcentre, a whole load of the KZGs are slowly dying... being a total of *28*, it'll be a pain to replace.
Finally, in the 2005 intellistation,...Leave a comment:
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Re: Failed MCZ rubycons
Yeah I'll get some pictures of the systemboards, as well as outline the caps that didn't fail (which are nestled in the same area).
It has nothing to do with the PSUs. These are IBM FRUs (either made by delta or acbel), so they're engineered to a higher standard.
The caps inside these PSUs are either chemicon or nichicon (I opened them up and checked)... sometimes even rubycon! An awesome acbel I have uses rubycons.
Heat isn't an issue, and if it is, they're way too sensitive (as the caps nearby weren't affected...Leave a comment:
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Re: Failed MCZ rubycons
#1 ELNA does make capacitors suited for system boards. I own computers with plenty of ELNAs. [URL="http://www.elna.co.jp/en/capacitor/alumi/catalog/series.html"]Please explore their website[/URL] for more info.
#2 These [B]are[/B] genuine MCZ. Now there were also MBZs nearby, and they happen to be perfect. I'm quite fond of the MBZs, very reliable.
#3 If MCZs aren't in the same category of KZG/KZJ... from my general observances, I'm seeing [B]more[/B] dead MCZ than KZG. I have computers amply filled with both types...Leave a comment:
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Failed MCZ rubycons
Normally rubycon is my favourite, but not when it comes to the mysterious MCZ series.
A friend of mine happened to always be talking about the MCZ series and how thermally sensitive they were. Well I ended up taking home quite a few suffering thinkcentres which had MCZs in them, generously too.
What's more curious is that only ones with a specific micro farad rating blew up.
10v, 1000uF -- OK
6.3v, 1800uF -- OK, known to silently fail (hard to replace! [I]skinnycaps[/I])
10v, 1500uF -- BAD BAD BAD!!!
So there's a huge variance... -
Re: when big brands have crap caps
I actually do own high quality deltas & acbels (which use rubycon, nichicon, and chemicon). And they are just fantastic!
[B]I was just surprised to find an mATX acbel pulled from a netvista to have awful construction and caps[/B] (even other consumer acbels I looked at used bad caps, much like all the other sub-par manufacturers). And this was the issue I was getting at.
Also, a PSU *should* last five years: that's insanely young!
I have computers and electronics that are way past 20 years old, and their...Leave a comment:
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Re: when big brands have crap caps
TEAPOs, evercons, licons, OSTs, etc... [U]are a [B]firehazard[/B][/U]. They should NOT be used in PSUs. Yet all the newest ones I've seen are plagued with them.
Here's a recent example I came across: Zalman's trashy 3rd party PSUs, look at all of those TEAPOs! I'm not buying a Zalman PSU, that's for sure.Re: when big brands have crap caps
TEAPOs, evercons, licons, OSTs, etc... [U]are a [B]firehazard[/B][/U]. They should NOT be used in PSUs. Yet all the newest ones I've seen are plagued...Leave a comment:
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Re: when big brands have crap caps
Well asides from the profit aspect; it poses a fire hazard, could potentially damage sensitive/expensive electronics, and clean power is always important.
Boy was my day ever ruined to find some TEAPOs in an acbel.Leave a comment:
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when big brands have crap caps
I've been in a bit of a pickle. Some of my older PSUs (like a 145watt acbel I have) use rubycons, and all that good stuff.
But there have been some models that [B]go as low as TEAPO, Licon, capxon, and others[/B]. And it's been bothering me.
A few notable brands to use these aforementioned crap caps are:
--> acbel
--> zippy
--> delta
(Now I really wish I kept my LITEON and sparkle PSUs).
Does anyone have info regarding why... these manufacturers would randomly do that?I've been in a bit of a pickle. Some of my older -
Re: Relative Farad ratings and polymer caps
I don't think the HM nichicon caps in there are bad, but it [B]is[/B] a 2005 computer. None of them have puffed out and leaked.
Due to its age, the KZGs, & the potential of bad nichicons, all the electrolytics should be replaced to be safe. It'll still be in service for a very long while, too.
Thanks for the help! I'll go with rubycon and panasonic.Re: Relative Farad ratings and polymer caps
I don't think the HM nichicon caps in there are bad, but it [B]is[/B]...Leave a comment:
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Re: Relative Farad ratings and polymer caps
The other [electrolytic] caps are nichicons, it's not a cheap board. But I would still like to replace them with rubycons if it's not too difficult.
Here's a photo:
You can see the tall KZG in front of the CMOS battery (sticks out like a sore thumb), the polymer caps near the CPU, and some random polymer sanyos, like one above the PCI-e x16 slot, above the SCSI card, etc....Leave a comment:
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Re: The GOOD Capacitors Thread!!
Absolutely, the ELNA caps in my computers are over 15 years old!
A lot of nichicons I've seen always seem to get puffy at their vents a little bit. Not always the case, but very frequent (same with chemicon).
Whereas ELNA is a lot more consistent with quality, I think....Leave a comment:
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Re: New Members - please post your introductions here
I have a bunch of older electronics (synthesizers & computers), so I became curious about replacing electrolyic capacitors. Badcaps caught my attention due to the fact there's a good focus on recapping motherboards.Leave a comment:
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Re: The GOOD Capacitors Thread!!
I actually have a few old computers with ELNA capacitors in the riser cards. They're very good!
But yeah, a lot of their caps are marketed towards audio.
I'd say ELNA is better than nichicon, but presumably overpriced. Of course, rubycon trumps them all --> though I've got some 30-year old sanyos in my old analog equipment that's getting along just fine
...
Leave a comment:
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Re: Relative Farad ratings and polymer caps
I'm doing this for a motherboard, so, I'd assume I would have to match the farad ratings judging from your response. From my understanding, it shouldn't matter if I go over the voltage rating though? As a higher voltage means it'll smooth the signal out better.
Yep, you guessed it, it's a KZG.
IBM made this awesome systemboard, most of the caps are actually already polymer ones, especially near the CPU (and other important parts of the board), but they stuck this [B]lone[/B] 3300uF KZG chemicon right...Leave a comment:
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Relative Farad ratings and polymer caps
I have two simple questions.
#1
Is it alright to [B]over[/B]shoot the farad ratings on a cap a bit? And if so, by how much?
[I]For example, replacing a chemicon 3300uF 16v (ugh), with a 4700uF 16v rubycon.[/I]
#2
Would I be able [instead] to replace the same said chemicon 3300uF, with a polymer cap; in which I'd use a 1800uF polymer due to the lower ESR rating?[INDENT]-->I'm guessing you'd divide the electrolytic's 3300uF by two, giving you 1650uF, which the polymer's 1800uF being the closest.[/INDENT]
Thanks!I have two simple questions.
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