In message "Amplifone HV", wrote:
> Fellow vector posse,
>
> I have good +-24V. I measured the following voltages (rounded) on the
> BU406D (which I tested, and it looks good) B: -24V, E: -24V, C: +24V
> BTW: If I didn't mention it explicitly, I'm not getting any high voltage. I
> don't hear a high-pitched tone, or a crackle, or anything from the HV unit.
>
DC on the base? Did you check the oscillator?
Cheers,
Mark