It depends on the age of the TV. The 'Made in the USA' Zenith is no
more. If you want a tuner knob for a 1963 Zenith console color TV you
are SOL. LG Electronics now owns the brand name. Boards for the
digital TVs may be available on eBay, otherwise the components (caps,
fuses, resistors, some ICs) are available from supplies like Digi-Key
and Mouser.
It depends on the age of the TV. The 'Made in the USA' Zenith is no
more. If you want a tuner knob for a 1963 Zenith console color TV you
are SOL. LG Electronics now owns the brand name. Boards for the
digital TVs may be available on eBay, otherwise the components (caps,
fuses, resistors, some ICs) are available from supplies like Digi-Key
and Mouser.