21FJP22 dud keep or toss?

[Chad Hauris]

I have a 21GVP22 that I think has a vacuum leak as the filaments don't light up. I have been reluctant to toss it but I wonder if it can ever be rebuilt if it has got air in it? I can't see any evidence of the crack though.

[smoker76]

Is it the one with the dead green gun filament?
If so, I would be interested in buying it.

[Eric H]

Originally Posted by smoker76

Is it the one with the dead green gun filament?
If so, I would be interested in buying it.

The red gun is dead and you can have it for shipping if you want it.

[smoker76]

Is the red gun filament out or is the emmision gone?
Has the tube been rejuvenated?
I am probably hoping for too much but I just thought if a filament was out that I may be able to tap and get it to work. Perhaps you tried that. I have one that had one filament out and tons of tapping made it work again. I had the filament voltage up high and allowed a slow cool down of 1/2 voltage for a half hour then 2 volts, then 1 volt for a long time and it seemed to make it so they come on now without tapping.
Also, I wonder if you have a shipping carton for it?
Thank you,
Johnny