Quote:
Originally Posted by bandersen
I finished replacing the leaky mica caps and out of tolerance resistors including the one in the eye tube base then redid the audio alignment. Bingo! 
The eye tube now responds like it should, I only get good sound at one distinct point on the dial per station and it coincides with a sharp picture.
Time to start putting this set back together  |
As i mentioned sometime back on your You-Tube video, Bob, i learned a long time ago to just go ahead & replace all them postage stamp (Mica) capacitors because they can & will fail. after many years of lack of use, moisture & humidity can get inside of them & contaminate the Silver Oxide (or whatever electrolytic material) they use for a dialectric. it amounts to the same thing as Silver Oxide Migration that is common to I.F. cans. back then, the technology just was not there to manufacture a perfectly sealed capacitor. those Micamold capacitors were not really much better then paper capacitors, especially in Humid envirements.
12-10-2013, 12:02 AM
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