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Yes I believe it will run alone with pin 11 pulled up.
This basic design has been in some sonys for years. As I remember
Its just a multivibrator, control circuit samples 130 V (pin 1-2)
& loads T603 to effect pulse amplitude to T605. I NEVER had
problems with the control circuit. Shutdown is via the micro chip
& senses beam current, HV & vert sweep. Pin 11 will go low &
the relay drops. But I am not an engineer & thats what I remember
from 15-20 yrs ago. I think it will run without the control ckt
BUT 130 will run high & D648 will short.
For now run separate on the bench, check everything around
IC601 especial R612 & 615, also had a C615 go once but it had
cracks & was shorted. & dont forget you are dealing with 2
separate grounds !
keep us posted
Zeno
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