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After a little research, it looks like this set crosses to a Sylvania 21C401. (I'm only going by photos of the cabinet layout). Although I'm not quite sure if Northern Electric made any changes electrically. It looks like Sams schematics Dated 12-56, Set 341, Folder 15. Does anyone know if the schematics can be uploaded from somewhere ? Models listed seem to include 21C401, 21C404, 21C405, 21C508, 21C509, 21T101, 21T102, 21T104, 21T105, 21T106, 21T110, 21T207, 21T208, 24T101, 24T201, (Ch. 1-532-3, -4, -5, -6, -7).
Yesterday I hooked up my B&K 466 and the picture tube (a 21" universal model dated 1965) tested midway in the BAD section for emissions. I tried a restore (1 press of the button) and it now tests 3/4 of the way into GOOD. What can I expect as far as life of this tube, provided I get around to re-capping the set ?
Tony
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04-27-2018, 09:27 AM
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