I have 6 VFD tubes IV-11 five are fine and one has a short between two adjacent segments so both come on. The short reads 140R. What could cause this internally and could I blow the short.
I know absolutely nothing about those model of tubes, but here is a little bit of common sense reasoning:
If the tube is shorted and is not working . . .
Pass enough current between the two shorted elements; and try and open up the short.
What is the worse that can happen? . . . Smoke, fire, sparks, and the tube is still broken.
What is the best that can happen? . . . now the tube works.
Nothing to loose if you try and fix it, Right?
Just my opinion
If the tube is shorted and is not working . . .
Pass enough current between the two shorted elements; and try and open up the short.
What is the worse that can happen? . . . Smoke, fire, sparks, and the tube is still broken.
What is the best that can happen? . . . now the tube works.
Nothing to loose if you try and fix it, Right?
Just my opinion