Hello Shane,
hmm, maybe the driver does not work well enough? If the digits that are
supposed to be "off" have a potential that is near ground, they might
light up. Check the voltage on the faulty digits accross ground.
My first guess was - without seeing the pictures - that you had tried to
drive a biquinary Nixie tube as a normal one. Biquinary Nixie tubes have
0 and 1, 2 and 3, 4 and 5, you know, all even and odd numbers connected
in parallel with two anodes. This way they have a standard noval socket,
but require a different kind if handling. But it looks o me as though
your tube was an IN-14, right?
Jens
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