Re: NOS Electrolytic caps



Gregg wrote:
While I agree with much that has been said about new caps being better,
AES has a fabulous reputation and I doubt they would risk it over some
capacitors. If they fail, send it back and you'll probably get them
replaced or money back.

Cool! Will they replace your transformer too? ;-)

As long as the NOS capacitor is still wet inside, it should reform if you
do it properly.  Properly is with a power supply set to the WV, and
a 1K (or higher) resistor in series with the cap.  It should take less
than 1 hour for the cap's current to drop to a few microamps.  I have
never had a cap that has been reformed this way fail.  (It is, after all
the way the manufacturer brought the cap up in the first place.)

I have had plenty of failures when I try and cheat by bringing up the
mains voltage slowly with a variac.

-Chuck
.



Relevant Pages

  • Re: OT: Testing a Filter Capacitor
    ... It is a Micronta 22-171 bought at Radio Shack. ... As for testing capacitors, you need something like an ESR meter ... to check if the cap is within something ... Mouser and digikey will list caps by size. ...
    (rec.games.pinball)
  • Re: Capacitor replacement question
    ... use quite different materials (solid electrolyte?), ... Try to make sure the majority of capacitors are sitting ... AC current rating through the cap. ... The AC ripple is a voltage, ...
    (alt.comp.periphs.mainboard.asus)
  • Re: Computer question
    ... heatsink compound, ... cap is the same as on the bad board, ... providing the power needs of a 1.3 processor. ... as the first, I'd suspect processor overheat, or bad mainboard capacitors. ...
    (misc.news.internet.discuss)
  • Re: Switching wires in the pair improves ADSL connections?
    ... The ring cap doesn't come into it. ... and so will all the extra capacitors if master ... sockets are fitted instead of slave sockets for extra extensions. ...
    (uk.telecom.broadband)
  • Re: Replacing electrolytics
    ... |>> |>>quality cap, as long as the specs are proper. ... |capacitors are fairly competitive in that spec, ... |>> spec devices in the Digikey catalog but I'll leave that to the OP to ...
    (sci.electronics.repair)