Quote:
Originally posted by Jeffhs
The two letters S on either side of the Philco's red emblem badge on the front panel may (and I emphasize *may*) stand for "solid state", though in my heart I doubt it very much. A TV of that vintage (except for Moto's works-in-a-drawer set, of course) isn't likely to have many transistors in it, if it has any at all. In fact, the only place I can see that Philco having transistors is in the UHF tuner, and even then it would likely only use one as a UHF oscillator (I don't think any of the major manufacturers, and certainly not the cheaper makes, ever used fancy-dancy UHF tuners with IF amplifier stages).
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Just to clear the air, the following stages are transistors. This info was obtained by the tube/transistor diagram in the cabinet.
VHF & UHF tuners
I.F.
Video Amp
AGC Keying
AGC Amp
There's a total of 10 transistors. All of the remaining stages are tube... about 17 IIRC.