[Test-Equipment] Exploding capacitors ? (wavetek 114s)

[GeoffK]

For those of us who are not sure of the procedure you refer to for reforming
caps, could you please set it forth here?
Geoff K.
----- Original Message -----
From: "J. Forster" <jfor@quik.com>
To: "Cmos" <cmos@shol.com>
Cc: "Test Equipment List" <test-equipment@mailman.qth.net>
Sent: Tuesday, June 24, 2003 1:21 PM
Subject: Re: [Test-Equipment] Exploding capacitors ? (wavetek 114s)


> Cmos wrote:
>
> > John,
> >
> > I don't know how long it has been sitting, as I got it as-is a few weeks
ago. But,
> > this dose seem to be the most likely cause, as other things(voltage,
load, ect.)
> > seem to be ok. It was an axial cap. made up of a plastic tube with the
ends sealed
> > with a very hard epoxy type stuff.
>
> Was the epoxy red by any chance? They are notorious.
>
> > Also, there was fluid that blow all over the boards when it exploded, so
it was not
> > dry.
>
> You should wash the remains off everything, quickly. The solution is
corrosive. Wash,
> rinse, and let thoroughly dry (maybe with a small fan)
>
> > It was also quite hot, as well as another one for the other polarity(was
a +/-
> > 12volt supply).
> > So, steam pressure sounds like the cause.
>
> Yep
>
> > I think I am going to replace both these caps and two other ones about
the same size
> > in another part of the power supply.
>
> Good move. In future, reform before applying power or replace, the latter
if this is
> not an antique where authenticity matters.-John
>
> > Jim Martz,
>
>
>
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