Not at all a Zenith but I dont think its fake.
Looks like it was a local build. Zenith licensed the use of its name.
Set would have a very high "local content". This would go toward
import restrictions that many countries have. Zenith sold a lot of
kit TV's that came un assembled & missing parts to do this also.
Seem to quite common in Arg. & look like US Zeniths. Never seen
the innards of one of them.
73 Zeno
LFOD !