Yes, that's what I've seen. It can take hours or days to fix cathode poisoning and it can darken the glass. I'm not sure that in18's are worth the trouble, to me.
Unfortunately,some tubes don't seem to be fixable no matter how hard you try. I guess they're the leaky tubes or have a bad gas mixture. On Wednesday, February 17, 2016 at 3:25:52 PM UTC-6, Greg P wrote: > > Even if they're not leaking, there's a LOT of hours of rejuvenation time, > to get those back to normal. > > > > On Wednesday, February 17, 2016 at 4:18:04 PM UTC-5, Pramanicin wrote: >> >> Having tried to rejuvenate a couple of IN18's with cathode poisoning >> myself, it's not a given that'll it work....sometimes when a tube is done, >> it's done... >> >> On Wed, Feb 17, 2016 at 1:10 PM, gregebert <[email protected]> wrote: >> >>> If it was cathode poisoning, wouldn't some digits illuminate properly ? >>> The video shows all digits with issues, except a few '7'. >>> I seem to recall earlier postings about reliability issues with IN-18's >>> manufactured in 1982. >>> >>> In my junkbox, I have a few 5031 nixies that don't illuminate properly, >>> and despite running them with higher current in an attempt to 'clean' them, >>> they showed no improvement. I assumed mine were slowly leaking, because >>> they are earlier-generation Burroughs tubes that preceded the legendary >>> 5092's, which are very reliable. >>> >>> -- >>> 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/03a16f14-b6aa-49ff-be5a-998c1820fe89%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/neonixie-l/03a16f14-b6aa-49ff-be5a-998c1820fe89%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/944c72f3-fab4-4254-b151-0b79692227e6%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
