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Leaking electrolytic capacitors

Discussion in 'Electronic Repair' started by JW, Nov 2, 2005.

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  1. JW

    JW Guest

    Here's a more complete listing of manufacturers who have had/are having
    quality issues with electrolytic capacitors.

    http://www.answers.com/topic/capacitor-plague

    In case this site gets nuked, here are the listed manufacturers:

    Commonly failed capacitor brands

    * Tayeh (A brand that does not appear to exist, indicating the actual
    manufacturers were wary of putting their name on their product; and
    probably a fake of "Ta-Keh", a genuine maker of high-end capacitors for
    audio equipment, used by Denon)
    * Chhsi
    * Teapo (Teapo has denied these claims, and evidence suggests their
    new capacitors are sound, however their older ones appear to suffer from
    the same problems other brands do)
    * I.Q.
    * Rulycon (A clone of "Rubycon", a well-known manufacturer of
    high-quality capacitors, right down to the exact style of the cases and
    the fonts used for lettering)
    * JPCON
    * Jackcon (The only capacitor manufacturer to own up to their mistake;
    they are also the only one to issue free replacement capacitors to people
    who had theirs fail. Their new products appear to be of greater quality.)
    * JDEC
    * CTC
    * (G) Luxon (also G-Luxon)
    * Gloria
    * Raycon
    * Hermei
    * Choyo
    * GSC
    * Nrsy (only with X-shaped vents. The new NRSY capacitors have K vents
    and are a genuine, high-quality Nippon-made part.)
    * Fuhjyyu (found in Antec power supplies to this day)

    As of May 2005, some evidence
    (http://www.ait.iastate.edu/sales/showitem.php?id=41) shows that the
    failing Nichicon capacitors on the iMac, Intel, and Dell boards are due to
    a different problem (specifically, overfilling the capacitors with
    electrolyte) than the one discussed on this page (faulty electrolyte
    formula). However, the symptoms (both the effects on the system and the
    physical appearance of the capacitors) are the same as the other failing
    capacitors, as is how to identify them, and the required repair.

    (I've actually seen a Dell P4 motherboard that had failing Nichicon
    parts!)
     
  2. kip

    kip Guest

    Hey ! Good for business...
     
  3. clifto

    clifto Guest

    "This article has been removed"
    I'm typing this on an Asus A7N8X Deluxe that has two visible Nichicon
    caps that are bad. Both are 3300 uF, 6.3V caps. One is visibly leaking
    a small amount of orange stuff out the top, the other is beginning to
    bulge at the top. Neither started showing symptoms during the first
    two years; the board was put in service 3/30/03 and started showing
    about a month ago (the bulge-only unit started about three days ago).

    I despair of finding 3300 uF in a 1 cm diameter package, so I'm saving
    my nickels toward another mobo and hoping nothing catastrophic takes
    out CPU, RAM, etc.
     
  4. Clint Sharp

    Clint Sharp Guest

    Seen lots, the Dell tech who replaced the two today (under warranty) has
    seen many more, Dell themselves asked us to try and limit the number of
    call-outs to five a day or under unless it's unavoidable, so I suspect
    it's a fairly big problem for them!
     
  5. Andy Cuffe

    Andy Cuffe Guest

    http://news.com.com/Bulging+capacitors+haunt+Dell/2100-1003_3-5924742.html

    It looks like Dell is well aware of the problem. I've personally seen
    two Dell P4s with bad caps in the power supplies.
    Andy Cuffe

    <-- Use this address until 12/31/2005

    <-- Use this address after 12/31/2005
     
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