Does anyone know/recall the dates for the bad HM and HN Nichicon caps?
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HM HN, Dates for the bad boys?
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HM HN, Dates for the bad boys?
Mann-Made Global Warming.
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Re: HM HN, Dates for the bad boys?
I understood it was 2002 to 2004 but I don't know the months.
I know Dell pulled all their Intel boards with them in March 2004 but that doesn't tell me when the bad caps stopped.
Not really concerned with new parts.
Wanna know to know which existing motherboards to expect HM/HN problems on.
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Re: HM HN, Dates for the bad boys?
Okay then.
Does anyone have a link to the news stories when Nichicon admitted the problem?
I might be able to estimate dates from those.
I have some boards w/2004 caps and I want to figure out if they are in the problem zone for time by the month.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
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Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
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You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Re: HM HN, Dates for the bad boys?
They should just discontinue the series these caps have obtained a bad reputation that will always be in the back of everyone's minds.
Maybe they are so reasonably priced because they want to unload junk caps.Last edited by Krankshaft; 03-20-2008, 11:10 AM.Elements of the past and the future combining to make something not quite as good as either.
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Re: HM HN, Dates for the bad boys?
Even Rubycons blow occasionally with a bad PSU or excessive heat.
One bad board here or there doesn't mean much no matter what the caps are.
Dell, who had the HN/HM problem with a number of their systems, issued a public statement that any of their system boards built after Feb of 04 would not have bad HN/HM caps.
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About the same time Nichicon announced that all the faulty caps had been pulled from the supply channels. (Obviously they had stopped making whatever mistake by then.)
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I don't know about early 04 but 05 date codes should be as safe as any other known good brand.
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
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Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Re: HM HN, Dates for the bad boys?
Originally posted by KrankshaftThey should just discontinue the series these caps have obtained a bad reputation that will always be in the back of everyone's minds.
Maybe they are so reasonably priced because they want to unload junk caps.
I agree with the first part.
At least come up with a new name for the series to avoid confusion and rebuild buy confidence.
The ones before and after the mistake aren't junk though.
HN is comparable to MCZ and comes in sizes you can't get with that low of ESR in any other series. (All the way up to 5600uF in a 12.5mm can.)
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Re: HM HN, Dates for the bad boys?
Thanks, I'll take a chance and pick up a 100 or two - if they survive for a year in VRM/PSU use, I'll go back and see if I can snag the remaining stuff in the carton. It's not that easy to find ultra-low ESR 3300uF in 10mm - probably only Rubycon MCZ, a few series of Samxon - neither of which is readily available locally to me.
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Re: HM HN, Dates for the bad boys?
6.3v 3300uF in 10mm aren't too hard to find here in MBZ.
Now 16v 3300uF in 10mm,, THAT'S a whole nuther story!!Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
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Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Re: HM HN, Dates for the bad boys?
0429 HN:
For what it's worth, I have an Intel board with 3x 1000uF 10V 10mm Nichicon HN(M) caps on it. 1 of the 3 has exploded. They have 0429 date codes on them, but 1 of the good ones I can't actually read.
The one that exploded is next to the top PCI-ex slot (where a video card would be). I haven't actually confirmed what it's connected to though.
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Re: HM HN, Dates for the bad boys?
If you accept isolated instances as proof of anything you'll need to rule out everyone because dang near every series has a failed cap here and there.
That's kind of why I opened the thread.
If we have say 3 or 4 other reports of bad HM HN from mid 04 that might tell us something.
What gdement just did is kind of why I posted this thread.
To collect HM/HN dates of fails.
My 'for what it's worth'.
There is a 0526 date code on HM's in the wife's machine.
They are RIGHT next to the heatsink on a 2.8 GHz Prescott.
In her uATX case the cooling isn't the best.
(I hate that case but she won't let me take the hole saw or a drill bit to it...)
I bought the MoBo used.
Been up and running almost 24/7 with the Prescott for almost 2 years now.
No problems. - None.
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gdement
On those 0429 HN, what was the PSU and what are/were the operating conditions.
The earliest fail I've been able to find is HM from 0135.
But that's the only 2001 dated fail I can find.
https://www.badcaps.net/forum/showthread.php?t=1286
.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
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Re: HM HN, Dates for the bad boys?
None of these will go into mission-critical stuff - it's just a useful ultra-low ESR series/value that will fit in places (Shuttle SV-24, Channel-Well PSUs, SFFs, etc.) where other series may not fit. It's certainly worth checking out whether Nichicon actually fixed the problem with the HMs - the only other 3300/6.3/10 mm series I have easy access to is Yageo (part of the Teapo conglomerate), so I'd be very happy if the 2005 HMs are good - I get them for the same price as the Yageo.
The first experiment will be on an i815T now running a Tualeron 1200 at 100 FSB - if I can get it to run stably at 133 FSB (1600 MHz), I'll be a happy camper.
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Re: HM HN, Dates for the bad boys?
Originally posted by PCBONEZgdement
On those 0429 HN, what was the PSU and what are/were the operating conditions.
The 2 good caps are in the vicinity of RAM and the power input, the bad one is near the large PCIEx slot, where it could be buried under a video card. The Vcore caps are oscons.
So I can see how heat could have been a factor, or it could just be a random case of bad circuit design. It's an intel board though, they ought to know what they're doing... I hope.
I agree that one fail isn't much to go by, especially since I don't know the history. Unfortunately I don't have any other boards with HM/HN caps from 2004+.
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Re: HM HN, Dates for the bad boys?
I'm thinking Nichicon had a ~REAL~ hard time selling them to anyone by mid 2004.
Probably just aren't that many around.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
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