Alex, from what it sounds like it could be so-called "sputtering." This
is when over years of use some of the cathode material (the digits,
which are constantly bombarded by ions) detaches from the digit and
flies around in the tube. Usually it deposits on the inside of the glass
bulb, and from the outside it looks like a shiny silvery coating, just
like you describe. There is nothing you can do against it, it is a sign
of wear on any tube.
A picture would help to make sure it is indeed sputtering :)
Best wishes
Jens
On 2019-04-11 7:32 a.m., Kevin A. wrote:
If you could take some pictures that would be helpful.
On Wed, Apr 10, 2019, 9:28 PM alex nolan
<masterscriptmaker...@gmail.com
<mailto:masterscriptmaker...@gmail.com>> wrote:
This is a nixie tube, specifically a B-5441. It looks like there
is some trouble getting the cathodes to fully light and it is
missing the blue haze around numerals that other B-5441s seem to have.
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