[Boatanchors] GREAT deal on eBay!!!

[J. Forster]

This abundance of heresay is no substitute for measured facts.

-John

============

> They may check good for now on the cap checker, but it has been my
> experience that they won't stay that way (basically what you stated).  I
> used to try to get by with replacing bypass caps that had B+ on them and
> coupling caps in the audio section.  That worked for a while, but,
> eventually, the radio would start to crap out a bit at a time as it was
> played. 
>  
> I think your idea for saving them and selling them to the low oxygen
> content speaker wire crowd is a great idea.  When I saw what Black
> Beauties were going for on Epay, I about spit out my pancreas.  I've still
> got a few brand new ones that I need to put on there.
>  
> 73,
>  
> Alex
> AA9XY
>
> --- On Fri, 12/18/09, Robert Nickels <ranickel at comcast.net> wrote:
>
>
> From: Robert Nickels <ranickel at comcast.net>
> Subject: Re: [Boatanchors] GREAT deal on eBay!!!
> To: "Alex Whitaker" <ehscott at sbcglobal.net>
> Cc: jfor at quik.com, boatanchors at mailman.qth.net
> Date: Friday, December 18, 2009, 11:12 AM
>
>
> Alex Whitaker wrote:
>> It would be interesting to see that stats.  However, I will predict
>> 99-100% bad.
>>   
> Maybe so Alex, but "badness" is kinda relative.  I've started replacing
> the black beauties and such just out of an abundance of caution (and a
> desire to not have to go back and re-fix something I've already "fixed"),
> but I run quite a few across my Sprague TO-6 and find that probably 70%
> check "good enough", i.e. they're in the ballpark for capacitance and have
> leakage of less than 2ma or so (my rule of thumb) at rated voltage.  But
> based on my anecdotal data, they *all* leak, and it's just a question of
> whether the process will continue to the point where it adversely affects
> circuit performance or causes component failure.  Obviously a leaky paper
> cap  used for, say, audio coupling will have a much greater impact on
> performance than one used as a cathode bypass.
>
> Still, I'm tossing the cut-outs into a container in hopes of some day
> making myself rich selling them to some audiophoole on eBay ;-)
>
> 73, Bob W9RAN
>
>