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If that tuner's the same wafer type as in my CTC-11s, a careful cleaning is a good idea. I cleaned the heck out of mine and it's still a little funky on occasion.
I've been told that hosing down the whole thing with DeOxit (or whatever) is a bad idea and I have no reason to doubt that advice. My current favorite method is rubbing contacts with Q-tips dipped in cleaner.
Some people just remove those line filter caps, but I'm a gullible sort who believes that parts were included for a reason. Our house is so full of RF noise from computer power supplies and whatnot, I figure these poor old TVs need all the filtering they can get.
Microphonics in a set that new seems a little odd. Certainly an issue with some older TVs. The Philco 49-1240 that I just finished has rubber chassis feet to reduce microphonics. Even with soft new feet, you can still get a ring if you tap the tuner knob with a pencil. My RCA T-100 has a thick lead shield on one of the tuner tubes. Couldn't hurt to look at tubes in the front end, anyhow.
Phil Nelson
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