01-26-2014, 09:39 PM
Paul, this may not apply to your radio, but I had a similar-sounding problem with a very different Philco, a 41-81 portable. I replaced a dead oscillator tube, and suddenly the band went dead from about 1200 up. Below 1200, the stations were about in the right place.
I checked the tuning cap, but didn't find a short. Voltages were about right.
I bought yet another oscillator. It made no difference.
On a whim, I repeated the alignment. That fixed the problem and everything worked fine. I can't explain why it stopped working when the old oscillator died, and I can't explain why the alignment fixed it.
On my radio I didn't have the problem of not being able to pick up a single station, only having the band become dead above about 1200.
I checked the tuning cap, but didn't find a short. Voltages were about right.
I bought yet another oscillator. It made no difference.
On a whim, I repeated the alignment. That fixed the problem and everything worked fine. I can't explain why it stopped working when the old oscillator died, and I can't explain why the alignment fixed it.
On my radio I didn't have the problem of not being able to pick up a single station, only having the band become dead above about 1200.
John Honeycutt
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