Thread: Philco 48-1000
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Old 10-24-2018, 11:49 PM
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Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
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Quote:
Originally Posted by decojoe67 View Post
I would say a complete decent example of Philco's first publicly available production TV should be valued around $350-$400. They're one of the most unique early televisions and not easy to find in good condition. I must say though, if you want an early working set to enjoy, pass on these early Philco's. As much as I loved the looks of my 1000, I parted with it because the audio was very finicky, if I could get any at all, and I like my sets working well.
Also, recapping the chassis is quite a chore. My repairman told me he needed a drink after he was done! Unless you can do it yourself, repairs will be fairly costly.
I just recapped mine over the course of two days.

I have a hunch your repairman did not try to understand the audio circuit on these. The thing to know on these is that the there is no fine-tuning because the ratio detector in the audio circuit doubles as an AFC/AFT circuit (*!)...Basically, there is a feedback loop that adjusts the tuning at the tuner's local oscillator to tune for best sound based on the DC offset at the ratio detector in the audio stage. If the audio IF and or ratio detector is out of alignment the circuit will stumble all over it's self to compensate and the results will be lousy intermittent unstable distorted sound...And the AFC will make aligning it by ear more difficult. Mine after the recap had weak intermittent distorted sound with lots of video noise...To fix it I had to disable the AFC by grounding the AFC line, (check the local OSC adjustment), then tune the IF cans for max volume/minimum video noise and adjust the ratio detector for minimum distortion, then unground the AFC line. The sound was nice and stable after that.

There is still a bit of video noise, but not much compared to some sets. Volume is a tad less strong than I would like, but then again broadcast TV audio carrier levels dropped substantially within a few years after they made this set so many of the early sets of all makes have diminished max volume levels baked into their design.

*It is very interesting to me that Philco put an AFC/AFT circuit into this set. It was around two decades ahead of its time (I have not seen many sets pre-1968 with AFT). It is also interesting that they were confident enough in it to not provide the user a fine tuning knob.
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