19" Porthole Zenith

[everstan]

The Zenith Porthole continues to mystify me...not that it would take much.
I appreciate your hints and they do seem very likely causing the prob(s) but when I doubled checked all the resistors and caps including resoldering the phonevision socket nothing was glaringly wrong.

I did end up getting HV but I did it by applying Horizontal drive from a Sencore VA62 to the grid (#5 pin) of the 6BQ6 to obtain the correct frequency @ 30V. I also put 130VDC on pin 4 (see schematic posted earlier) to the same horizontal output tube to the tune of 130VDC.
Part of the mystery is that unless I take out the horizontal occillator tube the feed to #4 pin drops way down to the 40'sVDC instead of the 130VDC I need.

I get nothing at all on the picture tube with plenty of HV present and the horizontal occilator tube removed with proper frequency applied.

Is there a vertical problem too which also effects the horizontal or perhaps a bad yoke. (it seemed to ring okay) Any suggestions where I might look next?

Help!!!

Stan