Tubes, they'd heat your house,or fill you garage.
I remember mid dad's old 25" color RCA, changing tubes when they would burn out, just glad none did when we walked on the moon. TV ran from 1967 to 1981, think ever tube got replaced,, some 10 times or more. Now no way to fix my 40" LCD HDTV, be etter to go buy a new TV.