[Milsurplus] [BoatAnchors] Forlorn Hope- PE-125 Vibrator Supply, PE-55 Dyno

[David Stinson]

----- Original Message ----- 
From: "don davis" <dxguy at earthlink.net>

> Or maybe dry it out at a lower temp for longer time so you 
> don't overstress
> it like the caps...  When you heat it above boiling point you 
> get steam that
> expands greatly and breaks things.  Also drives contaminants 
> where you don't
> want them.  150 deg F is safe bake-out temp we used in the 
> aerospace
> business for baking PWBs, cleaned assys, etc.

Respectfully, Don:
People have tried the "150 degrees for hours" approach
with things which have already failed from water
contamination, like old capacitors, many times before
and have nearly always failed to recover them.
A higher temp, shorter time has worked for me now
with old capacitors (still no new failures) and with
Bakelite-insert plugs.  You are certainly right- that sort
of stress is dangerous, but by this point there is literally
"nothing to lose" by taking sterner measures and,
it now seems, a good chance of gaining usable materials.

73 OM DE Dave AB5S