Quote:
Originally Posted by dieseljeep
I would think a socket would carbon-track only if water was spilled on the chassis and then it would have to be operating at the time.
After all this discussion, I decided to pull the 7" Motorola off the shelf. I never restored the set, but I did the preliminary checking of the condition of the set.
Of course, the set works very poorly and I don't remember what I did to check the basics. IIRC, I bridged the 'lytics and installed silicon diodes to replace the seleniums. I didn't do anything to it but plug it in. It hummed and it has a dim display on the screen.
BTW, this set was dated Feb, 1949 and uses 1/2 of a 12SN7 for the 1st audio.
More much later!
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Some of the early ones did use a 12sn7 and did use half for the audio and the other was for the verticle oscillator.