Author Topic: You get what you pay for?  (Read 5178 times)

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Offline SirDan

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You get what you pay for?
« on: May 28, 2012, 05:02:28 pm »
Beware of cheap components.

 

Offline radioman.lt

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Re: You get what you pay for?
« Reply #1 on: May 28, 2012, 05:15:58 pm »
 ;D
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Offline T4P

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Re: You get what you pay for?
« Reply #2 on: May 28, 2012, 05:22:27 pm »
Well you do get a rubycon but the rubycon is probably almost used up  ::)
 

Offline G7PSK

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Re: You get what you pay for?
« Reply #3 on: May 28, 2012, 05:32:23 pm »
That must cost nearly as much as making a proper one.
 

Offline SeanB

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Re: You get what you pay for?
« Reply #4 on: May 28, 2012, 05:38:21 pm »
Well, at least you can be sure that the explosion will be contained when it blows up from overvoltage.
 

Offline M. András

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Re: You get what you pay for?
« Reply #5 on: May 28, 2012, 05:41:02 pm »
hmm intresting i guess its from ebay and from asia :)
 

Offline tom66

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Re: You get what you pay for?
« Reply #6 on: May 28, 2012, 06:23:20 pm »
And inside the Rubycon there's a 10µF 50V. Printing and sleeve looks wrong on that Rubycon, probably fake.
 

Offline McMonster

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Re: You get what you pay for?
« Reply #7 on: May 28, 2012, 07:17:11 pm »
That's about the 3rd or 4th time someone starts a thread with this photo on this forum. :P
 

Offline SeanB

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Re: You get what you pay for?
« Reply #8 on: May 28, 2012, 07:20:46 pm »
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.
 

Offline TriodeTiger

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Re: You get what you pay for?
« Reply #9 on: May 28, 2012, 08:34:01 pm »
Now that you mention it.  I will mention that this was mentioned on the Amp Hour, which mentioned it was mentioned on the forums.

That's about the 3rd or 4th time someone starts a thread with this photo on this forum. :P
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Offline G7PSK

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Re: You get what you pay for?
« Reply #10 on: May 28, 2012, 08:58:03 pm »
Russian Doll's?
 

Offline Dawn

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Re: You get what you pay for?
« Reply #11 on: May 29, 2012, 12:05:38 am »
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.
 

Offline AntiProtonBoy

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Re: You get what you pay for?
« Reply #12 on: May 29, 2012, 01:56:17 am »
Valid point re. restoration, but why would you pack a 2200 uF cap into something that is supposed to be rated at 6800 uF?
 

Offline Psi

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Re: You get what you pay for?
« Reply #13 on: May 29, 2012, 02:17:59 am »
Valid point re. restoration, but why would you pack a 2200 uF cap into something that is supposed to be rated at 6800 uF?

The 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

Greek letter 'Psi' (not Pounds per Square Inch)
 

Offline sorin

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Re: You get what you pay for?
« Reply #14 on: May 29, 2012, 07:54:45 am »
where did you buy this?
 

Offline Gall

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Re: You get what you pay for?
« Reply #15 on: May 29, 2012, 08:30:43 am »
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.
The difficult we do today; the impossible takes a little longer.
 

Offline Dawn

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Re: You get what you pay for?
« Reply #16 on: May 29, 2012, 08:39:41 am »
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?

 
 

Offline Dark Prognosis

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Re: You get what you pay for?
« Reply #17 on: May 29, 2012, 08:40:30 am »
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.
 

Offline Gall

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« Last Edit: May 29, 2012, 07:39:56 pm by Gall »
The difficult we do today; the impossible takes a little longer.
 

Offline T4P

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Re: You get what you pay for?
« Reply #19 on: May 29, 2012, 07:48:03 pm »
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
 


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