Quote:
Originally Posted by vortalexfan
Those capacitors that are in your radio that are marked "Mica Condensor" can and should be left alone as those are for the tuner and if anything having to do with the tuner is monkeyed around with, then you'll have to screw around with realigning the whole tuner circuitry to match the new parts.
Plus mica based capacitors rarely fail so they will most likely never need to be changed.
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I agree that micas should be considered good till proven bad, however...
Multi-tuning knob TRF sets don't really have alignment. You can tweak how close to the same knob setting each knob gets when you tune a station for peak volume, but that setup isn't at all critical to operation. Normal tuning procedure on a 3-dial TRF is not all that different from aligning a 1 dial 3-stage TRF with a 3-gang tuning capacitor...only every time you tune to a station on a 3 dial you always have to adjust the 3 tuning knobs for peak audio.
Honestly, anything short of a TV or FM radio is fairly easy to align (and even FM you can do a half-decent job of aligning by ear if you know what you are doing).