> For example whenever I try to power digit 6, the digit '1' will glow > as well in one tube. If I connect digit '1' directly, '6' will also > partially light up. > > Any idea how to fix this?
I had this problem with my GR-1620* when I got it. A close look revealed that one arm of the "Kg" cathode had gotten hooked on the "t" cathode. I suppose this happened during shipping when it got knocked in a particular direction. So I considered the supports, lengths, weights, and arrangement of things and decided that a reasonable rap in a particular direction would likely pop them free of each other. I folded a towel and placed it on a table, gripped the tube firmly, and, greatly daring, tapped it in the way I had worked out. I didn't fix it, and I could feel/hear the elements vibrating. So I tried a little harder and it worked! The tube works perfectly now. * http://www.vitriol.com/images/tech/nixies/nixies-huge.jpeg With your tube, it's worth a try, as the tube has limited usefulness if you can not light the 1 or 6 separately. With smaller tubes (as I assume yours is, compared to a GR-1620), everything is lighter and stiffer, so it would take more impact to cause and (hopefully) fix such entanglement. But it's worth a try, if you can't otherwise use the tube. > I also have an NL tube of which the digit 6 never glows, instead the > wire connecting the pin & digit gives light. That's probably a broken connection. Fixing that without opening the tube doesn't seem likely (maybe, if there were a laser that could go through glass but be absorbed by metal, you could spot-weld the wire from outside, but that's just not likely). > I'm wondering if I am > really digit 6 killer... With two tubes, the chance is 1 in 5* (since two digits are involved in one tube), so given a single instance, it's not remarkable. If you randomly acquired a third tube, and it also had issues with 6, you're down to 1/25. A fourth tube, and you're past the 1% level, and I'd start to wonder about it. At first, I thought it was a variant of the Birthday Problem, but then I realized this would be the case where *all* the tubes shared the same digit, which is a different kettle of fish. * Actually slightly different, due to the way digits are stacked in tubes, where adjacent digits are much more likely to short than non-adjacent digits, which skews the probabilities in subtle and complicated ways. Birthday Problem: http://www.npr.org/templates/story/story.php?storyId=4542341 - John -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
