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RE: Repairing NSTs



Original poster: "Lau, Gary by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Gary.Lau-at-compaq-dot-com>

Once thoroughly depotted, most NST secondaries may be easily removed
from the core.  If you have a replacement secondary that's the same
physical size as the original one, by all means transplant it.  The only
precaution is that you have a 50-50 chance of getting the phasing
correct, depending upon which way you orient the coil on the core.
Don't forget to connect the inner lead to the core.  Power up and test
it before buttoning it up!

I have heard of some who have successfully left their NST's unpotted.
Personally I believe that they will last longer if repotted in melted
Vasoline jelly.

Gary Lau
MA, USA


>Original poster: "Robert by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<obiwan1186-at-sunflower-dot-com>
>
>I am trying to repair dead NST's and have a few ?'s. if you have two
>15,000v 30 ma transformers, each with one messed up secondary, can you
>take off the broken secondary from one tranny and replace it with the
>working one from the other transformer, or are they not removable?
also,
>is there any risk involved in running an unpotted transformer, or do
you
>have to re-pot it?