I have a few 6091's (smaller than the 8091), and nothing I've tried has brought them back. One appears to have a broken internal spot-weld, so it's a matter of how much high-current zapping I'm willing to blast-away the short.
The other 2 have darkened internally, which I think is sputtered-away cathode material that deposited on the interior glass surface. I havn't really had cathode poisoning with Burroughs tubes; the few that I've had fail went dark, except in the case of 5031's that seem to be leaking. -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/75a9fd91-39d8-4fc0-bf1b-e714ec31af6c%40googlegroups.com.
