Flicker in Neons used as colons

[Robert]

I noticed this on a number of clocks, sometimes within months, none have subsequently failed though

How common is this?

No issues with the Daibor colons although they are a different beast


Rob

[gregebert]

I have a large clock with about 300 NE-2 bulbs that I built in 2013. Most of the bulbs glow normally, but about 4 or 5 have a slight flicker and have done that for many years. I also have 2 dead ones I need to replace (yeah, that's what I said 10 years ago...).

So from what I've seen it's not common and it's not a sign of imminent death.