Thank you, Gleb, for that informative discussion and the beautiful photos. An impressive television in more than one sense.
The Leningrad's tidy under-chassis layout is a real contrast to the TV that I'm currently restoring: a 1949 Emerson from the USA. The Emerson has some of the sloppiest layout and construction that I've seen, with long, unbundled "lazy man" leads trailing all over the underside and obscuring other components. Cheap to build and annoying to service!
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html