List of Bad Cap Manufacturers

[bigcape]

Re: List of Bad Cap Manufacturers

you should poly mod it... start a new thread on it, post some cap values there, and we will teach you what to do tho fix that.

Start a new thread where ratdude747?

[PCBONEZ]

Re: List of Bad Cap Manufacturers

Or add to the last Dell 470 thread.
https://www.badcaps.net/forum/showthread.php?t=5974

[ratdude747]

Re: List of Bad Cap Manufacturers

didn't know there was a thread already... facepalm

HEY! POST #3600! whee!

[PCBONEZ]

Re: List of Bad Cap Manufacturers

May we add JUNZL units to the bad list? I found one bulging in a set-top box.

Have a pic?

[Per Hansson]

Re: List of Bad Cap Manufacturers

yup. the 470 is a rebadged easybake. they will cook almost every good brand due to the heat.

you should poly mod it... start a new thread on it, post some cap values there, and we will teach you what to do tho fix that.

btw, mac g5's do that too (hence the poly kit). too hot to handle.

Uhh, don't talk shit about stuff you don't know?
The Precision 470 is not some kids system, it is a workstation system
It has excellent cooling, hell, if you want to populate all RAM slots it will even force you to buy an extra fan for that!
This system with failed Rubycon capacitors has some issue, either broken fans, broken PSU or non genuine Rubycon capacitors, it would never be able to cook genuine Rubycon capacitors if working properly

[japlytic]

Re: List of Bad Cap Manufacturers

Just in; Silicon Chip September 2010: bad JFD units in an 18-month old HD set-top box. It was on top of a DVD player in an enclosed entertainment cabinet.

[markotech]

Re: List of Bad Cap Manufacturers

Nover?

Seen a case with them on https://www.badcaps.net/forum/showthread.php?t=103

www.nover.com

alot of TV set has more of this bad caps,could it be the manufacturers are also the bad guys

[shovenose]

Re: List of Bad Cap Manufacturers

are XICON caps any good? blue with black lettering. thats what most of the ones at the local electronics store has. i recapped a cheapo powmax 450w with them (only 2 in that psu were bulged so i replaced them and the one other of the same specs) and it seems ok...

[PCBONEZ]

Re: List of Bad Cap Manufacturers

XICON are not low ESR.
If you put that PSU on a scope you'd be scared.

[shovenose]

Re: List of Bad Cap Manufacturers

uh-oh...so it was an idiotic idea to give it to my friend ???
hes running a p3 off of it

[seanc]

Re: List of Bad Cap Manufacturers

I was investigating a problem with my washing machine today.

The PCB has 4 Capxon on it, whoopee!

Seems to be happily running through its wash cycle at the moment (thank goodness). I may replace the Capxon later.

[Th3_uN1Qu3]

Re: List of Bad Cap Manufacturers

uh-oh...so it was an idiotic idea to give it to my friend ???
hes running a p3 off of it

For a P3 it'll work.

[PCBONEZ]

Re: List of Bad Cap Manufacturers

For a P3 it'll work.

No, they won't. - At least not for long.
Good chance they will fry out the VRM on the motherboard before they go out themselves.
.

[Fraser]

Re: List of Bad Cap Manufacturers

Surprisingly from a high value Belinea flat screen (10 20 30):
Almost all caps on the controller board and the 1000µ PSU cap.

- All the TEAPO (No surprise)
100µ * 6
330µ

- All OST
470µ
330µ

- All Eltec (Eltoc ?)
1000µ

[EJT]

Re: List of Bad Cap Manufacturers

I have done a recap of my Marantz CD10, I found 4 Rubycon Black Gates in there which were leaking....
They were 15 years old
Are they crap or not?
Anyway I put Pan fc in there
What about Multicomp?
I read in a post here that they are not low ESR...
But are they crap or not?
I may want to put 2 100uF / 6.3V bipolar in a protection circuit of an amp
Usually there's no voltage on them only when the protection starts working

[PCBONEZ]

Re: List of Bad Cap Manufacturers

I have done a recap of my Marantz CD10, I found 4 Rubycon Black Gates in there which were leaking....
They were 15 years old
Are they crap or not?

Just old and heat eventually got them.

What about Multicomp?

Multicomp = multiple companies = generic.
Most likely Chinese junk.

I may want to put 2 100uF / 6.3V bipolar in a protection circuit of an amp
Usually there's no voltage on them only when the protection starts working

Bipolar are used when the polarity changes in operation.
A low ESR bipolar would be rare if any even exist.
Both sides of the aluminum foil have an oxide layer [dielectric].
Using them in a circuit that doesn't reverse polarity will eventually erode [remove] one of the oxide layers effectively turning it into a polarized cap.
.

[EJT]

Re: List of Bad Cap Manufacturers

Ok
But there has to be a reason for choosing this type of bipolar cap
It's the protection of an Accuphase power amp
Knowing Accuphase....
For now I put in 2 Pan fc's
Not entirely good but it'll work until I find good bipolars
The old ones were Elna... 20years old or so and leaking
But it won't be Multicomp
I saw a few Nichicons at Mouser
I just hope they're the same quality like Pan fc

EJT

[PCBONEZ]

Re: List of Bad Cap Manufacturers

Ok
But there has to be a reason for choosing this type of bipolar cap

Without seeing a schematic I can't tell you why it's there.
.

[japlytic]

Re: List of Bad Cap Manufacturers

In an old TV set (late 80s) was a bad DIACON bipolar electrolytic used for coupling of the horizontal yoke.
Ever heard about this brand of capacitor?

[PCBONEZ]

Re: List of Bad Cap Manufacturers

Couldn't find DIACON.
Possibly a defunct brand.