You get what you pay for? - Page 1
Forum section: electronics / general

author: SirDan
author_rank: Contributor
timestamp: May 28, 2012, 05:02:28 pm
content: Beware of cheap components.

author: T4P
author_rank: Super Contributor
timestamp: May 28, 2012, 05:22:27 pm
content: Well you do get a rubycon but the rubycon is probably almost used up

author: G7PSK
author_rank: Super Contributor
timestamp: May 28, 2012, 05:32:23 pm
content: That must cost nearly as much as making a proper one.

author: SeanB
author_rank: Super Contributor
timestamp: May 28, 2012, 05:38:21 pm
content: Well, at least you can be sure that the explosion will be contained when it blows up from overvoltage.

author: M. András
author_rank: Super Contributor
timestamp: May 28, 2012, 05:41:02 pm
content: hmm intresting i guess its from ebay and from asia

author: tom66
author_rank: Super Contributor
timestamp: May 28, 2012, 06:23:20 pm
content: And inside the Rubycon there's a 10µF 50V. Printing and sleeve looks wrong on that Rubycon, probably fake.

author: McMonster
author_rank: Frequent Contributor
timestamp: May 28, 2012, 07:17:11 pm
content: That's about the 3rd or 4th time someone starts a thread with this photo on this forum.

author: SeanB
author_rank: Super Contributor
timestamp: May 28, 2012, 07:20:46 pm
content: Looks like a real rubycon, just had a few years of use before it was relifed after it was removed from the pcb rather brutally.

author: TriodeTiger
author_rank: Regular Contributor
timestamp: May 28, 2012, 08:34:01 pm
content: Now that you mention it. I will mention that this was mentioned on the Amp Hour, which mentioned it was mentioned on the forums.Quote from: McMonster on May 28, 2012, 07:17:11 pm

author: G7PSK
author_rank: Super Contributor
timestamp: May 28, 2012, 08:58:03 pm
content: Russian Doll's?

author: Dawn
author_rank: Regular Contributor
timestamp: May 29, 2012, 12:05:38 am
content: Not knowing the context of this photo, I'm going to venture a guess. This cap was part of a "restoration" of some so-called classic piece of equipment, usually audio or amateur. This is a common practice so the owner feels that he's getting a perfectly restored item for bragging rights. Parts are smaller now, especially 'lytics and don't fit the original spaces or mounting. Some customers will have sh*t-fits if you repair a piece of vintage equipment and substitute 3 new 'lytics for a long, unavailable 3 section cap that mounted in a clamp or a much smaller part on the original space on the circuit board for example and ruin it's collectability. Packing new parts into original containers is an old trick.

author: AntiProtonBoy
author_rank: Frequent Contributor
timestamp: May 29, 2012, 01:56:17 am
content: Valid point re. restoration, but why would you pack a 2200 uF cap into something that is supposed to be rated at 6800 uF?

author: Psi
author_rank: Super Contributor
timestamp: May 29, 2012, 02:17:59 am
content: Quote from: AntiProtonBoy on May 29, 2012, 01:56:17 amThe picture is just a dodgy china fake capacitor.But in terms of restoration, possibly because it was originally rated at 6800uf to get high ripple current rather than capacity.A modern 2200uF might have the same ripple current as an older 6800uF

author: sorin
author_rank: Frequent Contributor
timestamp: May 29, 2012, 07:54:45 am
content: where did you buy this?

author: Gall
author_rank: Frequent Contributor
timestamp: May 29, 2012, 08:30:43 am
content: I saw this picture many times already. It is very old, photographed about ten years ago. It was already discussed on this forum.Usually they just change the label on the component. I.e. TDA7296 is sold for TDA7293 or HER101 is sold for HER107. This makes sense even for cheap components since relabeling costs nothing.

author: Dawn
author_rank: Regular Contributor
timestamp: May 29, 2012, 08:39:41 am
content: It could be several reasons for the difference. Proof positive would be if we could see the date codes on both if it was a restoration. Older hifi equipment had a tendency to beef up the caps for the same reason that installers add "stiffening caps" for momentary power on peaks from a smaller power supply/transformer nowadays. We don't know the origin of the photo. The one on the left could be one of a pair of pulls and the right shows the method for restoration illustrative purposes. The original heat shrink sleeve is still intact on the left. Highly unlikely that a cheap Chinese cap or other brand relabel is going to have a Japanese Rubie in it. Rubycon has a great rep for quality aluminum caps and electrolyte research. Why would they relabel under a different name?

author: Dark Prognosis
author_rank: Regular Contributor
timestamp: May 29, 2012, 08:40:30 am
content: http://www.tineye.com/search/4e41c6d4a1d658c13d64d842968628976c235c64/Not orignal and not from the OP (at least not the pictures) as Tineye spotted (means might be even more) 41 results of that picture.

author: Gall
author_rank: Frequent Contributor
timestamp: May 29, 2012, 07:37:56 pm
content: "Rubycon" may be fake as well.Remember this topic:https://www.eevblog.com/forum/projects-designs-and-technical-stuff/warning-fake-large-electrolytic-on-ebay-!!/msg60765/#msg60765

author: T4P
author_rank: Super Contributor
timestamp: May 29, 2012, 07:48:03 pm
content: Yeah ... Rubycon ... Highly faked but i always look for the unique vent shape of what looks like a transistor rubycon has that's a telltale sign fakers normally don't do