Trash find Zenith tube console

[DavGoodlin]

Originally Posted by dieseljeep

How long did Zenith use that one knob design?
IIRC, they were more problematic. The two indicator drums would rub and the teeth would chip on the VHF drum.
The next year began the UHF tuner problems.

I have 1970 and 1971 Zenith sets with said UHF tuners, very annoying - bumped the knob and it went total snow, at one time UHF tuner was important in my area, not anymore

I never got ambitious enough to try my theoretical fix: remove the shaft and clean/re-spring the copper grounding "fingers". I thought an intermittent ground on the rotor plates would stop the UHF osc