Why should someone replace ALL the capacitors on old Tube eq

[Michael A. Terrell]

oldschool@tubes.com wrote:

On Sat, 4 Feb 2017 14:39:13 -0500, Nick Danger <nick@third.eye.net
wrote:

On 2/4/2017 12:13 PM, Michael Black wrote:

And with names like "Black Beauty" and "Orange Drop", who would question
at the time that they weren't good products?

Michael

I know from years of personal experience that "Black Beauties" were
*notoriously* bad. However, I always thought the Orange Drops were
pretty good. Not so?

Back in the mid 60's into the 70s, I was told the black beauties were
one of the better caps made. But after reading a lot of websites about
caps, it now appears they have proven to be bad.

They were good when they were first introduced, but the plastic
casings didn't hold up to their long life hype. If you look at a Black
Beauty, they soldered the leads to the tubes used to fill the housing
with PCB based transformer oil. That sealed the housing but the molded
plastic appeared to be incompatible with the oil used. The construction
was detailed in some early ads for the Black Beauties.


--
Never piss off an Engineer!

They don't get mad.

They don't get even.

They go for over unity! ;-)