List of Bad Cap Manufacturers

[RUllER]

Chemicon leaking from another PSU

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Chemicon exploded in new psu

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I found this site because I was researching the quality of some caps I found swollen.

I would like to add to the list Elcon and JWFDZ capacitors.

Elcon appears to be Taiwanese and JWFDZ I think is Russian.

Purchased two Deaf Bonce car audio amplifiers two years ago, they sat for a year on a shelf before being put to use. One of the amps a few months in started having intermittent turn on issues, the other amp was working just fine. Finally pulled them both and opened up for inspection, I found three of the JWFDZ caps on the power supply side swollen, assuming this being cause for the turn on issues. They were 4700uf 25v caps.

On the other amp I found one of the two Elcon caps swollen. These were 4700uf 80v caps.

Glad that they had not started leaking but I do think the JWFDZ caps may have vented a little as there was some brownish corrosion looking stuff on the cover plate directly above where those caps sat.

[lti]

Re: List of Bad Cap Manufacturers

I thought Gloria would have gone out of business in the early 2000s. There was one brand of motherboard back then (I don't remember which - maybe it was Shuttle) that used them, and they failed a lot. That cap picture on their home page is amazing.

Teapo appears to be owned by Jamicon now. Their old caps were made by Yageo, who now owns Kemet (one of the "cheap" brands I use in non-critical stuff).

[CaptKarnage]

Re: List of Bad Cap Manufacturers

Just found this site today. The place where I currently work get boards from another company which often uses Gloria and Teapo capacitors. Historically, capacitor failures have been a big cause of our product failures - though no one has checked which brands are causing more failures. After finding this site, I will definitely look at those capacitors with more scrutiny. Seems that if they're not listed on any of the major supplier sites, they are probably crap.

Also, I found that caps with the "Gloria" brand are still being made by "Jeenn Chwanq Enterprise Co, LTD" who's website is: https://www.jeennchwanq.com.tw/

That being said, just today their site went down as I typed this (It was up, then down, then up again in the course of me making this post).

[Oldschool297]

Re: List of Bad Cap Manufacturers

What about RELAND SUN?

[RukyCon]

Re: List of Bad Cap Manufacturers

What device was this from?

A crappy aftermarket laptop power adaptor.

[andrewsawesomr]

Re: List of Bad Cap Manufacturers

New Chang clone just dropped. Introducing, Thang®️

What device was this from?

[RukyCon]

Re: List of Bad Cap Manufacturers

New Chang clone just dropped. Introducing, Thang®️

[lti]

Re: List of Bad Cap Manufacturers

Is that Changxin logo made of mutilated Comic Sans?

Of course, the best is Chongx VEHT. Those turn into Black Cats if you apply their rated voltage.

[andrewsawesomr]

Re: List of Bad Cap Manufacturers

I would pick Chang. All of the others are copycats of Chang (and also copycats of themselves). That being said, the quality of Chang capacitors isn't too good either.

[momaka]

Re: List of Bad Cap Manufacturers



And to think some people say Cheng/Chang/Chong+/-X is "decent" ...
- OK, but which one is the genuine brand one among all of these impostures?
(Hint: it's a trick question... a very very trick question )
.
.
That said, I really have no idea which one I'd pick. Probably would have to put a bunch of papers with their names in a hat and draw one randomly. I'm sure the chance of any of these lasting any reasonable amount of time will be just about as random as my hat lottery.

[RukyCon]

Re: List of Bad Cap Manufacturers



If you were forced to only use one of the brands pictured, which would it be?

Chong(A)
Chong
Chengx
Chongx
Chenxing
Chang
Changxin

[momaka]

Re: List of Bad Cap Manufacturers

I had some Marcon made Illinois Caps and Nichicons (from around the 90s or so) that started leaking down their negative legs in storage, as the legs were starting to turn green and slimy near the bung. The Nichicon caps were mostly from the PL series, and were all never installed.

Nichicon PL and especially the PR series were notoriously known for doing this.
I have a number of old Astec PSUs that use these (well, the PL series). But they still seem fine and the PSUs work. Being a don't fix it if it ain't broke type of guy, I haven't opted to replace those caps yet. Sooner or later though, I'll probably run into that issue, I'm sure.

[RukyCon]

Re: List of Bad Cap Manufacturers

I had some Marcon made Illinois Caps and Nichicons (from around the 90s or so) that started leaking down their negative legs in storage, as the legs were starting to turn green and slimy near the bung. The Nichicon caps were mostly from the PL series, and were all never installed.

[eccerr0r]

Re: List of Bad Cap Manufacturers

Do we add (possibly) defunct/bought out manufacturers that made capacitors in the 1970s or earlier?

Like Aerovox ... does not appear to be in business anymore, and 50 years later these capacitors are probably bad.

I just pulled a few "Cerco" branded caps that had really high ESR, IMHO even for "general purpose". Their capacitance weren't too far off and their leakage isn't all too horrible.

[andrewsawesomr]

Re: List of Bad Cap Manufacturers

Well, I just checked my salvaged capacitor collection and found a Rukycon capacitor. What initially tipped me off was the absence of a vent, then the wierd negative stripe (regular Rubycon shown for comparison). Real Rubycon shown is 5x11, but the Rukycon is a 5 or 7mm that they just threw the standard 105°C label on.
Measures 222uF with .88 ohms of resistance. Not sure if that's good or bad.

[Hobb7t]

Re: List of Bad Cap Manufacturers

Wow, just touched the post and it seems like a great myth is included, thanks for sharing and caring

[lti]

Re: List of Bad Cap Manufacturers

https://www.badcaps.net/forum/attach...3&d=1305338380

[RukyCon]

Re: List of Bad Cap Manufacturers

I have one of those sitting on my desk.

Which? a battery operated radio/lantern, or a capacitor thats three letters off from spelling 'Fu#k-you'.
(Not sure if i have to keep things PG here, so i'll play it "safe")