Rejuv tubes other than CRTs?

[Electronic M]

Originally Posted by Kamakiri

Never tried this, but I wonder if you'd be able to use an "activate" procedure on a tube to stir up a little life in it. Just turn up the filament voltage by 20% while it's on the tester.

If it's gonna hit the trash can anyway, seems like it'd be worth a try.

I did that with some 20's tubes (type 45s IIRC) and had mixed results....I believe I got an increase in emission, but the tubes were gassy.