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Radio Road Which tuner to get and getting the most from it. Thank God, for the radio! |
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Radio Road Which tuner to get and getting the most from it. Thank God, for the radio! |
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In Reply to: FM-3 hum is back and question about impedances. posted by ltman on March 9, 2024 at 08:20:43:
Switch, yeah that's an interesting idea. Hadn't thought of that. I did give it a deoxit bath when I first received the tuner. That's SOP for me for all vintage equipment. And as is well known with the FM3, corroded and/or poor ground connections with any component or connection in the FM3 can induce hum.
I ended up working on the tuning ganged capacitor due to obvious corrosion and unpleasant noises when tuning- removing, cleaning out corrosion thoroghly with "no residue" cleaner, relubing the bearings with that dern expensive silver-bearing conductive grease, removing corrosion from the mounts to the chassis, and resoldering the tuning cap's grounding tabs.
That fixed the hum.
I bought components and perf board to build the pec mods but have been occupied recently with restoring some reel-to-reel decks...
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- RE: FM-3 hum is back and question about impedances. - ltman 08:13:42 04/24/24 (0)
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