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I wonder ...
Original poster: "Garry F. by way of Terry Fritz <twftesla-at-qwest-dot-net>" <garryfre-at-pacbell-dot-net>
Some poor fella send me email about how he was in the process of depotting a
Magetek's Jefferson NST.
I remember these horrible things. The one I had, did not have tar between
the case and the secondary which was only an 8th of an inch away!
The windings on both sides literally melted. I tried to depot the thing and
as someone else also observed, the windings are insulated by tarpaper and
anything that will melt or disolve the tar, also disolves or ruins the
The poor fella had already started soaking it.
I suggested he remove the thing and try to restore the connections and just
put the thing, tar and all into a container full of mineral oil.
The core and shunts are also one piece. There are no separate shunts that
can be knocked out.
The silicone also raises the melting point of the tar to above 400 degrees
in my experience.
The thing I am wondering about is we have a list of known bad caps. Perhaps
it would be good to add a section of parts to avoid where people could be
warned away from buying this brand of NST if they are planning to depot it.