Rich said:
> Firstly, I would try to determine if the problem is in the tubes or in
> the amplifier. To make this determination, I would test the tubes for
> abnormal leakage. To do this you need a +/- 5kV high-pot tester,
> current-limited to a couple of hundred uA. . With +5kV on the anode,
> you should be seeing under 10uA.
Rich,
What is your reference for this?
Lane
Ku7i
>If the measured leakage decreases when
> the anode is negative, you could have a bit of gold-sputtering -- which
> is Not necessarily a fatal condition. Loose gold will definitely mess
> with grid-current readings.
> cheers, Sam.
>
>
> - Rich..., 805.386.3734, www.vcnet.com/measures.
>
>
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