Are my 6100 tubes really bad?

I've now got a pair of WG 6100 tubes that exhibit the same symptom. When
HV is applied to them, they make a sizzling sort of sound, glow
purplish/blue in the neck, and don't display a picture.

The first one was tested with a known-good HV unit and deflection
board. The second one I acquired recently and don't have 100% certainty
that these other pieces are good, though I think they are.

Is this a sign of lack of vacuum in the tube, or is it a short in the
neck? If it's a short, what does everyone think the chances of dislodging
it/burning it out with a rejuvenator are?

Thanks,

Richard
www.arcadeobsession.com/sog

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Received on Mon Sep 25 12:45:50 2000