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Old 11-29-2022, 08:10 PM
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radiotvnut radiotvnut is offline
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Join Date: Jul 2007
Location: Meridian, MS
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Quote:
Originally Posted by zeno View Post
Agree. Probably the most reliable Zenith built. And the BEST greens of any set.
Cold joints at Hoz drive transformer were 90% of the fails. After that
just a scattering of odds & ends.
A little more on CC2 XXX chassis ( S-3 style) & System 3
A few late J line high end 25" sets were built with the new XXX chassis.
They were NOT marked System 3.
K line System 3 came out on all but the leader models. System 3
was just a feature list. If it had the full list it was called a S-3.
J & K line were first gen XXX chassii , still had PWR transformer
and a normal H drive & output design.
L-line starts gen 2 XXX chassis. Transformer gone, replaced by a
complex H drive & out. They could also shoe horn it into a 13".

Why no FBT's supplied ? For us a 9-160 module net exchange
was $66. Buying a similar FBT, H out & a hand full of small parts would
approach that. But swapping the board takes maybe 4 mns & a
complete repair 15 mns. So a lower labor rate & total cost is
about the same.

Last the spark gap. It belongs in the hall of Zenith fame. We saw
many sets in for a different reason with blasted gaps. Normally
on a modern set seeing that throws up a stop sign. You will
often have a totaled set on your hands.

enuf fer now
73 Zeno
LFOD !
I think I remember seeing one of those late "J-line" consoles with the "System 3" chassis, but the set was still labeled as "solid state = chromacolor II."

I have "K" 19" motel set with AM/FM radio and it uses the modular CC2 chassis, paired with an inline EFL tube.

I also have one of the last 19" delta-gun CC2 sets from '78 and it is obviously a "loss leader" set. No AFC button, no Chromatic button, just a power button and the two channel knobs.
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