That could be mercury condensate. I've seen it on a few JAN (mil spec/extended life) nixies I have; mercury is used to greatly reduce cathode poisoning.
On Wed, Apr 10, 2019, 7:42 PM alex nolan <[email protected]> wrote: > Hey all, > > Has anyone seen a tube with the inner glass covered in silver spots inside > the tube? What does this mean and is it repairable like cathode poisoning? > > Thanks! > > -- > 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 email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/59ddf35a-ae0a-4a4d-9adf-11c25768b021%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/59ddf35a-ae0a-4a4d-9adf-11c25768b021%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- 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/CALcVLK%2B6KWt__11Jtj0Gx7BZqLzUp%3DFgj3DdKvwEce94scjMDA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
