It looks like you fixed that issue. What does TP9 read now?…i’m assuming that it’s around 70V?
Are all the other test points reading correctly?
Just for good measure you may want to reflow the other joints around the signal path and tighten the other tube pins. To keep from having to pull the board out of the chassis just solder as many components as possible on the component side of the board and see if that fixes the signal path problem.
Do you, by chance, happen to have access to an oscilloscope or other signal tracing tool? If not, no problem…just thought i’d ask.