panasonic fm failure in 5 minutes!

[kc8adu]

it was NOT installed backwards!
a replacement did not fail again.

[willawake]

Re: panasonic fm failure in 5 minutes!

looks genuine also

[Topcat]

Re: panasonic fm failure in 5 minutes!

on that sad note, I've gotten a few Dell GX270's with a couple vented rubycon MCZ's. Out of 200 boards that I got, it was only on 3 of them, and on all 3, it was the one right behind the AGP... I'm sure it was a failure resulting from other failures on the board (these boards had many Nichicon HN caps as well), but its always sad to see a vented Ruby........ Looks like you just got a turd of a Panasonic....

[MD Willington]

Re: panasonic fm failure in 5 minutes!

too bad, maybe just a bad one of what.. a thousand, ten thousand... bound to happen, though not as frequently as the "other" guys cap I guess.

[tiresias]

Re: panasonic fm failure in 5 minutes!

too bad, maybe just a bad one of what.. a thousand, ten thousand... bound to happen, though not as frequently as the "other" guys cap I guess.

I agree - the presence a single defective unit among thousands (which this clearly was) is not surprising in any mass-produced product. The only way to avoid this would be for companies to test each unit before shipping it, which would raise the cost very considerably.

On the theme of Low-ESR capacitor reliability though - I must confess I've never seen, or heard of, a failed Sanyo WG. Had my personality been different (and were I 10 years younger), I would be a Sanyo fanboy.

...

PS. Don't you dare pop one on purpose just to prove me wrong!

[kc8adu]

Re: panasonic fm failure in 5 minutes!

now that i think about it the sleeve might have been on backwards from the factory.
of 5-6 hundred of these i have used in the compaq psu with the 4700 suscon i have yet to have a comeback.
you can bet i will look at the lead length on each as i install now!

[arneson]

Re: panasonic fm failure in 5 minutes!

BadSleeves.org

[dood]

Re: panasonic fm failure in 5 minutes!

I hope it was just a one-time fluke... I use panasonic FM for lots of stuff...

[PeteS in CA]

Re: panasonic fm failure in 5 minutes!

That is amazing - 5 minutes to failure. I tend to suspect either a sleeve issue or a manufacturing defect. Even if you subject the parts to 3 or more times their rated ripple current, it can be several hours (or several hundred hours) to catastrophic failure.

[Rainbow]

Re: panasonic fm failure in 5 minutes!

I got a wreck of unknown external modem made by Zoom - with front panel missing and no power supply, of course. No voltage rating printed anywhere, Google found nothing and Zoom techsupport told me that I can buy a new power supply from them (no specs, of course). So I opened it up - there was a lot of diodes and caps in the power section, along with 3 voltage regulators (7805, 7812 and one unknown, probably 7912). First, I tried it with 9VDC - it powered up fine but there was no 12V for the serial port. Then I tried with 16VAC power supply from Microcom modem - and it appeared to work fine, at least communicating with PC. But smoke came out after about a minute or two - so I turned it off immediately. One cap bulged and leaked and was very hot to touch (T.I. branded 1000uF/25WV). I guess that 16VAC was too much for it - but I don't know.

[Tom41]

Re: panasonic fm failure in 5 minutes!

Believe it or not, I've seen a Panasonic FC fail before. Not in 5 minutes like this one, but gradually over time.
This particular cap was in a VCR, not a computer or modem. After a while the VCR would power up and immediately power off. If I kept pressing the power button, it would eventually stay on - but the output picture was terrible quality with bad sync. It's almost like the VCR was running on reduced power! If I gave it about 5 minutes, it would 'warm up' and start working.

Opening the VCR up, I immediately saw the cap (a Panasonic FC) bulged slightly at the top. I thought that the Panasonic caps were generally good, perhaps it was exposed to too much heat? The VCR _was_ sitting on top of a digital cable box...

[MD Willington]

Re: panasonic fm failure in 5 minutes!

We do know extra heat will cause the lifespan to decrease. Also consumer electronics for the most part are "Use it until it dies" ~ year or so, maybe a bit longer on some higher end stuff, that is why you can get a DVD play for ~$20USD at Walmart... cheap parts.

I'm probably getting more cynical as I get older but IMHO most electronic stuff is poop from the get go now...

[hkivan]

Re: panasonic fm failure in 5 minutes!

I brought an Amoi DVD8750 dvd player with under
400 HKD in Walmart Shenzhen last year.
I opened the cover and saw full of unknow caps.
But, the video DAC, MT1389QE, is of 12bit 108Mhz type
and the audio is wolfson wm8766 6 channel DAC.
The picture quality is better than my old AIWA XD-DV370.
The AIWA costed me over 1700 HKD a few years ago.

I just replaced some of thel caps with KZE, rubycon ..etc.
The I/P cap, TL 400v 47uF was replaced by a rubycon
MXR 400v 120uF. Anyways, I feel better to have Japanese
caps.

All in all, adding the price of the Jp caps, it was a worthy buy.

[willawake]

Re: panasonic fm failure in 5 minutes!

i saw a portable dvd player with lcd screen for 99 euro

[hkivan]

Re: panasonic fm failure in 5 minutes!

For me, a MP3 player is far more useful than a portable dvd player.
What is the brand & does it come with any video input connectors?

Under 99 euro ( = 1000HKD) , I could buy a Hyundai dvd recorder or a
panasonic dvd-s49 ( which can play DVD-audio, mpeg4, Divx, WMA).
Nowadays, china-made dvd players are quite OK,
especially those well know brands. Amoi is one of the 3 big
players in china. But, I won't buy any china-made
high end models or I will think it twice B4.

In fact , I am not thinking of the potential failure of the unkown caps.
I replaced the thin cable to a thicker one, wrapped some wires with
aluminium foils and added heatsinks to chips. I just wish to make it
sound better.

Recently, I find some dvd players in hk ( not in shenzhen )
priced only 199. wtf !
But the brand is far inferior. I will only trust those famous.

[trodas]

Re: panasonic fm failure in 5 minutes!

Geee, that's sad news, kc8adu I wish it won't repeat on any of mine caps, and I used a hell lot of Panasonic FM ones... Come to think, I recall that one of the 120uF 16V ones (very small suxxka) looked to me that his top is bulging, but I just replaced it and so be it

Topcat - well, that it is. Everything could fail. We just trade the "sure fail" of bad brands for the "very unlikely to fail" of the good brands. Bad aples can be everywhere, tough

MD Willington -

I'm probably getting more cynical as I get older but IMHO most electronic stuff is poop from the get go now...

Unfortunately you aren't getting more cynical, just more experienced.

I rememember, 20 years back we laughed at some USSR made parts what was bigger and heawier, yet solid made and last forever. As good example that started my doubts in modern cost-optimized electronic was microswitches in Commodore Amiga mouse buttons. I constantly seems to keep killing 'em. I replaced them like 6x for each of two mices? Damn. (taking replacement from dead PC mices...) The first ones that come with Amiga 500 are big, bulgy and solid. Almost half the size of the USSR ones. Well, I did not like the mouse much, yet they never fail. But the mice that come with A1200 - that feel right in. But their microswitches are very small ans they won't last long.
So, that is where the laugh ended. Some things is better take from USSR, they hold forever once you make them fit No cheap metal - pure solid cooper contact with solid brass sprung. Certainly it holt the 10A of what it was rated. Yet todays everything is rated at 10A, but after constantly using one switch to switch on about 3 - 4A load for about 4 months - it give up.

Death to cost-over-optimizing capitalism crap!

[MD Willington]

Re: panasonic fm failure in 5 minutes!

I rememember, 20 years back we laughed at some USSR made parts what was bigger and heawier, yet solid made and last forever.

I know what you mean...

[Shroomie]

Re: panasonic fm failure in 5 minutes!

I'm probably getting more cynical as I get older but IMHO most electronic stuff is poop from the get go now...

Ain't your age. I'm hardly old enough to drive and I feel the same way.

Makes me very sad that you can't get, for example, a power supply with decent caps nowadays, unless you pay out the nose for it...Heck, when I have a supply with Teapos and I'm glad, I consider myself LUCKY, there's something wrong...

[kc8adu]

Re: panasonic fm failure in 5 minutes!

I agree - the presence a single defective unit among thousands (which this clearly was) is not surprising in any mass-produced product. The only way to avoid this would be for companies to test each unit before shipping it, which would raise the cost very considerably.

On the theme of Low-ESR capacitor reliability though - I must confess I've never seen, or heard of, a failed Sanyo WG. Had my personality been different (and were I 10 years younger), I would be a Sanyo fanboy.

...

PS. Don't you dare pop one on purpose just to prove me wrong!

here ya go!
https://www.badcaps.net/forum/showthread.php?t=1962

[trodas]

Re: panasonic fm failure in 5 minutes!

MD Willington - good point And it is not only reliability and much less maintance what make the AK line excelent choice, it is novadays also the firepower. My friend is a soldier and we sometimes train with various NATO forces, Americans including. One of these excersies was about firing on metal targets that rise from the land and soldier have to shoot them and the hit of the bullet is used to take them down. Of course the higher you hit (upper torso, neck, headshot) the more punch the bullet does and the easier the target come down.
Now even heashot hit from M16A2 or even worser, M4 witch is shorter and therefore have even worser "punch" to the target can't take the target down. So, the sensitivity has to be adjusted, but - and that make my head spin - the sensitivity so M16 can take the target down has to be as light, that wind is taking the targets down itself w/o bullets...
So, all the hype about M16A2 is pure BS. The weapon is, thanks to the useless NATO standard 5.56 x 45 round, useless if your enemy got even standard bulet proof jacket. Unless you hit arm, leg or best - headshot. While on the same hand, the 7.62 x 39 mm AK round can penetrate even class 2 bulet proof jacket up to around 50 - 60m. Class 3 hold, but it is not standard equipment, and it won't hold, if you hit between the plates...
For these that find this unbeliable I would kindly suggest this link from US army soldier to study:
http://www.washingtontimes.com/op-ed...3501-9601r.htm

The M-16 rifle: Thumbs down. Chronic jamming problems with the sand over there, which is like talcum powder. The sand is everywhere. You feel filthy two minutes after a shower. The M-4 carbine version is more popular because it's lighter and shorter, but it also has jamming problems. Marines like the ability to mount the various optical gunsights and weapons lights on the picatinny rails, but the weapon itself is not great in a desert environment. They all hate the 5.56mm (.223) round. Poor penetration on the cinderblock structure common over there and even torso hits cannot be reliably counted on to put the enemy down.

I find unbeliably funny that american weapons are designed to penetrate only the "american houses from cartoons", yet fail miserably when come to normal cinderblock structures that are everywhere else into the world mainly used for houses...

And one more thing about the 5.56 x 45 round. It is very small and light, so it has to bet all on velocity. Nothing wrong with it, yet the effects on humans are very ughly. As the 7.62 hit does, it just stop on the bone, broke it, but won't do anything else. But on the other hand, these 5.56 ones are light and bounce on the bones inside man, witch create serious internal damage and in fact it should be considered same as the illegal bullets with shifted mass centre or dum dum bullets...
(sure they "work good" back in Nam days, where bullet proof jackets aren't used in army, but todays are useless - except agains civilians or badly supplied rebels)
Yet it is not.
But I remember that back in WW1, people are more decent and fair. When they capture soldier with modified or illegal bullets in the pack, he got shoot ASAP.
Yet todays we using amunition that is not very dangerous to the soldiers with their bullet proof jackets and helmets, while it has a devastating effect on civilians w/o these jackets and helmets.

Same pattern is with the DU ammunition. According to the OSN, it is a WMD for the long time effects on civilians and everyone in the area where it get used. Yet it is used...

Ah, we getting political and OT out there...

The point was to show that in too much areas the world and technology are degenerating and not improving, witch is extremly sad and warning sign...


Shroomie - glad to see that some of the younger ones learned the lesson as well as gained some wisdom too. The even more sad truth is, that even if you pay premium like me for Enermax Liberty 620W PSU, the caps I find inside are almost noname ones...
Yep, I just killed your last hope that buing hi-priced equipment give you the quality you pay for. Another lesson could be my X-Fi Fatal1ty (check the hefty pricetag) full of Jamicons instead of audiophiles prefferable Pannyes FC...
Or my friend buying the expensive OCZ PowerStream 600W PSU to find out that inside the big caps are - Teapos...

Seems EPoX has learned their lesson - my 8RDA3I Pro is full of Rubycons...

Yep, but tell that to the users like me, who bought 8RDA+ ones that died on them... You must know now how I feel towards Epox now, don't you?