[Tom Albrecht]

V12 (vertical output) gets its plate voltage for both sections (pins 2 and 5) from the focus control, which in turns gets its voltage from a resistor chain fed by the HV.

You correctly note that your voltages on pins 2 and 5 (+140 V and +43 V) are too low, telling us that something is wrong.

There are probably two main ways this can happen:

1. Not enough drive signal from the vertical oscillator. If the signal on the grids of V12 are too small, then both triodes will tend to conduct too much, pulling their plate voltages low.

1a. If the grid drive on just one of the two triodes is too weak, it could still cause this problem. One way this could happen is if there is a problem in the network that feeds the inverted signal to the second triode (grid = pin 4). Can you confirm that C65, R65, R64, C67, C66, and R62 are all correct value and good?

2. Supply voltage to anodes is low. This is fed from the high voltage through the following resistors: R4, R5, R80, R81, R82, R83, R3, R61, R63. Have you confirmed that all of these are OK?

Is your HV correct? Do you have a HV probe to confirm that there is 4-5 kV there? If you don't have a HV probe, let me know and I can suggest how to use a microammeter (if your DVM has this function) to read your HV.

(edit: sorry, didn't see the posts on the new page yet when I wrote this reply -- see below)