Thanks Dave. I will give that a try. There is a "country store" just down
the road from where I work.
Tim Flood
On Tue, Nov 5, 2013 at 10:09 PM, Dave Halliday <dh@xxxxxxxxxxxxxx> wrote:
> I would build a wood bracket to hold the transformer upside down suspended
> over a disposable large aluminum roasting pan.
>
> Set it in the oven and gradually up the temperature until the tar starts
> dripping out. Keep it there for a couple hours.
>
> I would pot it in mineral oil. You can get this cheap from any "country"
> store that sells horse and other critter stuff.
>
> Vaseline can leave pockets of air.
>
> Dave
>
> > -----Original Message-----
> > From: tesla-bounces@xxxxxxxxxx
> > [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of Tim Flood
> > Sent: Tuesday, November 05, 2013 06:25
> > To: tesla@xxxxxxxxxx
> > Subject: [TCML] NST Repair
> >
> > I heated the two 9/60 NST's in an oven hoping to repair any possible
> > internal shorts. Luckily, this was done at an oven here at
> > work. About one
> > third of the tar boiled out exposing the upper portion of the
> > windings,
> > etc., and leaving slumped areas with porosity holes.
> >
> > The questions are should I reheat the transformers at a lower temp. to
> > close up the holes then replace the lost tar with vaseline?
> > Melt out all
> > tar and refill completely with vaseline? Replace the
> > transformers and not
> > go through the above.
> >
> > In the meantime I'm starting on a completely new one.
> >
> > Thanks in advance for any advice, and yes I probably did
> > something wrong
> > when heating the transformers.
> >
> > Tim Flood
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>
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