A couple of possibilities to think about... Either you've got a rogue tube where there is some manufacturing flaw that is markedly increasing sputtering. Or there's a problem with the clock circuit which is allowing a significant over-current through that tube specifically - maybe a current limiting resistor is not the value that it should be (wrong component picked out of the parts bin?).
Without seeing the circuit for the clock, I can't judge whether the second explanation is possible. Jon. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/fb450bad-ad56-4c2e-93c3-aa5bc576f952%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
