The device had no video. Measuring the 800V tap showed only 85V present.

Voltages

+6V is 6.028v, fine

+12v is 12.2v, fine

+28v is 23.4 volt

+32V is 26v

-40v is -32v

800v is 85v

The +6v and 12v come from the PSU, these are fine. The others are generated through the T1 transformer, something is definitely off there.

Vertical amplifier

tp2 showed:

16.7ms should be 17ms, assuming it to be ok

Voltages seem OK too.

TP3 (inverse of the above, more or less)

TP1 should be a clean sawtooth but looks like this:

tp5 (5V square 64us):

Q14 base:

Must be between -0.5 and about 1.5V, 64us (dead on)

Q14 collector:

Does not look right, it should be:

Collector T13 (driving transistor for the flyback transformer):

Looks very much off; should be: