On Thursday, August 30, 2018 at 11:41:20 AM UTC-7, Pramanicin wrote: > > Speaking of B6091's....I have a set of B6091's that refuse to illuminate > on digits 5 and 9 but cleanly illuminate on all other digits...there are > occasional flashes on the 5 and 9 when running a rotating sequence of all > digits at about 180V....are these tubes particularly finicky after > prolonged storage? > > >> I have about 30 of these, and none showed any flaky behavior. But I do think the 6091 is not as reliable as it's smaller predecessor, the 5092. So far I've had two 6091 tubes fail in my big clock in the past 5+ years, and zero failures with 5092's One developed an internal short, and the other has severe discoloration, presumably from sputtering.
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