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Re: [TCML] Re: Coil Died



I used a high dollar gas oven and set the temp for low (don't remember the temp). Added 5°F every half hour 'til I hit the right temp. No smell, and no mess. I scooped most of it out with wooden tools, like paint stirrers and chop sticks.

However, if all you have is a carbon track through potting compound cracks, some have had success with just melting then cooling. A continuity test will tell you if your secondaries are open circuited or short circuited.





On Saturday, October 19, 2013 8:22 PM, Dave Halliday <dh@xxxxxxxxxxxxxx> wrote:
 
'the awful smell in the oven' only happens if you get it too hot.

Buy a cheap toaster oven at Goodwill and stand it on its back (make a box of
cardboard that is the same size as your NST to check tht it will fit).  Set
it at low temp and let it sit for a few hours. Check the tar. If it is not
the consistency of heavy motor oil, raise the temp ten degrees and wait
another two hours. 

Do this outside on a sheet of plywood on a cement surface and you will be
fine.

Dave

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx 
> [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of Ed Phillips
> Sent: Saturday, October 19, 2013 15:06
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Re: Coil Died
> 
> I'll add my experience.  Nothing new of course but when 'one 
> end' of an 
> NST is bad and probably partially shorted through a track in the tar, 
> I've been successful on several occasions by using a really 
> high power 
> hot air gun to melt the tar there.  Takes a long time with 
> heat applied 
> to case and top of tar until is's very liquid and a lot safer than 
> digging into the tar and finding the leads. 
> 
> Hasn't always worked but the time invested trying is well 
> spent.  I've 
> never tried heating the whole transformer in an oven because 
> of the fire 
> danger and the time it would take to melt and then cool.  
> There's also 
> 'the awful smell in the oven'.
> 
> Ed
> 
> Dave Halliday wrote:
> 
> >You can get carbon tracks through the tar.
> >
> >Search the Pupman site for more info:
> >
> >https://www.google.com/search?q=tar&sitesearch=www.pupman.com 
> >
> >Dave
> >  
> >
> >  
> >
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla

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