WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
Oops, Sorry,
I meant the plates driving the primary, not the secondary.
If you built according to the schematic(s), that is why you can not
get any power out.