Quote:
Originally Posted by dieseljeep
I found that removing the cover on the UHF tuner and resoldering the grounding fingers, would help a whole lot.
I remember the flywheel tuners too!
I sold a lot of 6AF4's, when I first started TV repair. They only lasted a few months, because we used UHF so much. The 6DZ4 was a real improvement.
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For those never "on the job" a few other UHF tips
Watch lead dress & NEVER bend the plates !
CLOSE plates while working on.
No U mixer diode
No U osc transistor, to delicate so I never did one.
Make sure its getting B+
UHF IF cable. Cheap sets like GE crimped the cables & would die
or go int. When we junked a Zenith we would save those pretty green
UIF cables & use them as replacements.
VHF RF amp tube can cause snowy UHF so can the mixer.
You can plug a tuner sub into the UIF jack as a test.
Thanks for the memories.................
73 Zeno
