630TS Lost the Vertical

[Electronic M]

Got scope? Checking the waveforms against the schematic (if sams that early have waveforms) should reveal issues.

Another method is to connect the heater to the output tube grid...That will inject a 60Hz signal and give the output some drive. If the output works with injected drive then you can also do the same at the osc. grid to check whether the isue is in the coupling between osc and output or a lack of oscillation.