The main problem seems to be the hoz osc. It goes off freq
& then collapses. It may be a cold joint, dirty control or electrolytic.
Hardest thing on these little sets is physical servicabillity.
Numbers from Sams often dont match & the PCB's are usually only marked
on the top. Add to that the crowding...
Good news is CRT looks strong & should come out nice.
Bad news is my SAMS manual is missing so you will have to find one
to continue.
73 Zeno
LFOD !