"Sleeping Sickness". A form of cathode poisoning, from not being powered for some time. It appears that sitting idle for too long, effects the surface of the metal cathodes. This effects the work function, and they light up, unevenly. Its a problem for all cold cathode tubes. Did you run them for a few hours, or so, at elevated current ? This usually cures the problem. But not always.
... a few tubes that have a piece of one cathode segment not lighting up. -- 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. To view this discussion on the web, visit https://groups.google.com/d/msg/neonixie-l/-/-J_AsE5FG_4J. For more options, visit https://groups.google.com/groups/opt_out.
