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The HV does not collapse. Blooming is probably the wrong term.
It looks like space charge, curable only by higher anode voltage.
The tube I have can generate dangerously high brightness.
The resistor has been replaced, and both caps appear to be in good shape.
Their capacitance measures OK at low voltage, they do the job, and
don't get warm.
One question for somebody who has a very original one:
WHERE is the loose clip-on pilot light that comes
out of the radio power supply supposed to go, and do?
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