Tubes in Blue


Some of the tubes on my machine show blue florescent neon color on their envelopes. Is there anything wrong with those tubes? Please provide your suggestion(s) and experience.

Thanks in advance.

Otto
yu11375

Showing 1 response by franklapdog

Normal for some tubes to do this.What I can gather from some tube experts is it has to do with slow leakage of vacume gasses.Go figure.