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Agree with Hemingray, tubes are usually good and problems are with bad tube-to-socket contact, dirty volume control and tuning capacitor, etc. I routinely restore radios that still have all their original tubes and go OK. Not to say that one could be weak. I am working on a 1960 Zenith that had blown its selenium rectifier, maybe due to bad electrolytic, fragmented a resistor, and maybe in the process made the output tube weak. Fixed all that. On the tube radio, as you stated, you'll want to change your paper caps and the electrolytics and I'll bet that with a cleaning will bring it back.
On the transistor radio, the small electrolytics are probably leaky and need to be changed, but you'd want to see if the power supply works first, and then inject an audio signal at the volume control, output stage, etc. to see if the speakers will squawk, and finally signal trace backwards through the RF stages.
The ceramic disk caps in both radios are probably OK.
Lots of good old radio funtime with these!
Reece
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Reece
Perfection is hard to reach with a screwdriver.
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