No brand is safe due to rampant counterfeiting!

[gg1978]

Re: No brand is safe due to rampant counterfeiting!

do you have pics?

I don't have pictures of the particular board, but they're the United Chemicon LXV series at 6.3V. I've replaced about 4 of these boards, and i have one that hasn't seen enough use to fail yet, although i'm sure if i put a Tbird 1.3 on it, and ran it for a few months straight with Prime95, it would probably pop the caps.

[japlytic]

Re: No brand is safe due to rampant counterfeiting!

I meant to say that a smaller rated capacitor (a 2200uF 35V or even a 10uF 50V unit) hidden in a 6800uF 50V can.

[willawake]

Re: No brand is safe due to rampant counterfeiting!

on Chemi-con site dated March 31 2006

Buyer Beware
To all of our Customers:
Recently, we have seen a substantial increase in the number of incidents of counterfeit Chemi-Con capacitor products in the marketplace.
Please protect yourself: only purchase Chemi-Con capacitor products from officially "FRANCHISED" Chemi-Con Distributors and Representative WorldWide!!!

[linuxguru]

Re: No brand is safe due to rampant counterfeiting!

Damn - I just bought some LXZ that looks genuine. I thought that only Rubycon was popular target of counterfeiters.

[willawake]

Re: No brand is safe due to rampant counterfeiting!

if you deal with known good supplier then dont worry.

[willawake]

Re: No brand is safe due to rampant counterfeiting!

here is another thing to watch out for when buying boards - lookalikes. not exactly what chemicon is talking about in their warning though. anyway if the board is only examined quickly from far away they appear to be chemicon KZG but actually they are Evercon.



evercon



evercon and one KZG in the middle, from the bottom. evercon are not even using consistent bung style. i have about half with one style and half with the other, same date codes.



evercon and one KZG in the middle, from the top

[japlytic]

Re: No brand is safe due to rampant counterfeiting!

I'd be shocked if I manufactured equipment using Nippon Chemi-Con capacitors, finding some were counterfeit.
I think you should ask Nippon Chemi-Con about the counterfeit capacitors, mentioning the "Evercon" brand with pictures.

[linuxguru]

Re: No brand is safe due to rampant counterfeiting!

Evercon is not a counterfeit, merely a passing look-alike (with different printed markings). It's very easy to distinguish an Evercon from a Chemicon. It's harder to distinguish a small Samyoung from a Chemicon.

The problem is with counterfeits that use exactly the same markings and text, down to the font, as the original. So far, I have encountered only suspect Rubycons (usually large cans and a few YXG) and a few Panasonic (of undocumented/outsourced series - HFA, HFE, FF, FJ). In some cases, the suspects turned to be authentic, but with non-standard can dimensions - Rubycon YXG 1000uF/6.3v in 8x12 is a case in point.

[PeteS in CA]

Re: No brand is safe due to rampant counterfeiting!

In some cases, the suspects turned to be authentic, but with non-standard can dimensions - Rubycon YXG 1000uF/6.3v in 8x12 is a case in point.

If a customer has sufficient volume, companies such as UCC will do semi-customs.

[japlytic]

Re: No brand is safe due to rampant counterfeiting!

Found something about fake capacitors (can-type for AC) on http://twilight.saic.com/qawg/scitre.../APPENDIXA.htm

Polished surfaces scratched or dented
Termination lugs scarred
Buildup of debris and dirt in termination guards
Plain packaging (no manufacturer bar codes)

Some might mark higher than normal voltage ratings on the capacitors, then someone gets annoyed when they fail prematurely.

[DixiePenguin]

Re: No brand is safe due to rampant counterfeiting!

Just a quick question. I have a bunch of what appear to be Chemicon except in the middle of the shield logo is a dot. Can is black with silver graphics. I had not encountered any with the dot in the center of the shield before.

Are these legit?

Thanks,
Bill
Thanks,

[DixiePenguin]

Re: No brand is safe due to rampant counterfeiting!

Sorry,
I meant to add that they are LXV series that Chemicon's site says are power supply caps, but I pulled them from an old socket 7 motherboard.

Bill

[DixiePenguin]

Re: No brand is safe due to rampant counterfeiting!

I don't have pictures of the particular board, but they're the United Chemicon LXV series at 6.3V. I've replaced about 4 of these boards, and i have one that hasn't seen enough use to fail yet, although i'm sure if i put a Tbird 1.3 on it, and ran it for a few months straight with Prime95, it would probably pop the caps.

Here are photos of the caps I was asking about, are they similar to the ones you noted? These are 1500uf 10v LXV pulled from an old socket 7 board.

Sorry the pics are not better. All my good cameras are 35mm still out of digital step, I guess.

Bill

[PCBONEZ]

Re: No brand is safe due to rampant counterfeiting!

Not Chemicon.
That is old Sam Young logo.
http://capacitor.web.fc2.com/pqrst.html#samyoung

[Scenic]

Re: No brand is safe due to rampant counterfeiting!

what about Rudoycons? lol

[JEWilson]

Re: No brand is safe due to rampant counterfeiting!

i have seen this with other parts.sanken and toshiba power transistors for power amps.
motorola transistors esp mj150xx types.
it was hell finding a dist. with genuine motorola parts when a customer needed some cnc motor drives rebuilt.they had some counterfiet parts from the last place that rebuilt them.they would run with no load on the motor but under load they went off with a bang!

Per post
https://www.badcaps.net/forum/showth...hlight=X-power

Might it be possible, the 2K2611 I got from a seller in China are fakes?

I ask, as only when a load (only 4 HDDs) are attached to the PSU,
it fails to start. For all other intents and purposes, the PSU appears
good. I thought it might be the protection circuit and most recently,
thought about pulling the startup resistors to test them.

Any advice appreciated

Thx

[japlytic]

Re: No brand is safe due to rampant counterfeiting!

I found a Chemi-Con 400V 22uF LXF unit in a DVD player, which had an "X" vent having different angles. They discontinued LXF series units years ago, and they never made a 400V unit of that series.

[ratdude747]

Re: No brand is safe due to rampant counterfeiting!

Like this?

sorry to bring up an old pic, but that is the funniest bad cap picture i have seen in a while! bump for historic purposes!

[kc8adu]

Re: No brand is safe due to rampant counterfeiting!

hey at least when it explodes it will be contained!

[ratdude747]

Re: No brand is safe due to rampant counterfeiting!

i wonder if the fact fuhyyu primaries are so lightweight has anything to do with that...