Italian 1962 TV B&W

[lucvic]

Hi dear all,
I'm writing from Italy ( my english is not so good),
I started to try repairing this set 20 days ago.
I changed all electrolitics caps but vertical sync is
unstable (I need to adjust vert freq pot if I change image pattern).
No focus on sound yet.
I can share here the schematics if someone will so polite to help me
to understand how this set works.

thank you

best regards
Luca