While on the subject of bad 7971's, has anyone done failure analysis on a bad tube ?
I have one that is completely dead because there is a crack in the base, therefore it leaked. No mystery there. Another one has 1 bad segment that does not illuminate at all even above 250V, with no obvious signs of why. All other segments are good. There is some sort of internal substrate, perhaps mica, that appears to have traces on it to connect from pin-straps to the individual segment cathodes. Perhaps the internal connections get broken from temp-cycling, physical shock, etc. I'm not going to break mine open to find out. -- 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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/438933b5-2824-4cab-a6da-149ba37963b7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
