"In many cases the trimmer capacitors in square boxes under the chassis would become loose from the variable selectivity shaft and could move. The cause is expansion of the pot-metal rotor collar resulting in the set screw coming loose from the…"
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Mark A. Toppo's Discussions
AM/FM Philharmonic
Started this discussion. Last reply by Norman S Braithwaite Aug 24, 2020. 2 Replies 0 Likes
I was adjusting the sensitivity on the AM band when I lost audio for AM and all short wave bands. The FM band is still working. The radio was completely restored in 13 with attached pics. I have…Continue
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"In many cases the trimmer capacitors in square boxes under the chassis would become loose from the variable selectivity shaft and could move. The cause is expansion of the pot-metal rotor collar resulting in the set screw coming loose from the…"
"Could be an endless list of things. I suggest having a competent tech look at it. The AM and the FM section only share the power supply/audio output. "
AM/FM Philharmonic
I was adjusting the sensitivity on the AM band when I lost audio for AM and all short wave bands. The FM band is still working. The radio was completely restored in 13 with attached pics. I have checked all the tubes. I pulled the chassis and could not find any glaring problem. Has anyone had this happen to their Philharmonic? I got the radio complete with no cabinet 11 years ago. It had once belonged to a ham and the original chrome is the best I've seen. I got a donor Philco at a yard sale…See More
"AM FM Philharmonic no audio on all bands except FM. Happened when adjusting sensitivity. Fully restored with pics on the Radio Museum site."
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