03-02-2021, 08:31 PM
The service literature is pretty complete. Would clean it up, rebuild the multisection filter cap and if it has any foil/paper caps they have to go too. That Atoms caps is from the 70's or old and is more than likely spent.
Something that is critical is the power supply voltages mostly the 8.5v. If the 8.5v is too low then the performance will suck. If it's to high it will burn out the filament in the tubes. It powers the filament string when it's operating from AC. Since the filaments have to have dc on them the 8.5v is derived from the B+ line. So the B+ has to be on target with no leaky caps or weak rectifier tube. That's why I mention all the caps. Check out section 1 in the service info for the p/s readings. One odd thing I noticed the IF frequency is 265KC. It's not a problem or anything just different.
https://philcoradio.com/library/download...6-1947.pdf
Something that is critical is the power supply voltages mostly the 8.5v. If the 8.5v is too low then the performance will suck. If it's to high it will burn out the filament in the tubes. It powers the filament string when it's operating from AC. Since the filaments have to have dc on them the 8.5v is derived from the B+ line. So the B+ has to be on target with no leaky caps or weak rectifier tube. That's why I mention all the caps. Check out section 1 in the service info for the p/s readings. One odd thing I noticed the IF frequency is 265KC. It's not a problem or anything just different.
https://philcoradio.com/library/download...6-1947.pdf
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got it!
Terry
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