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this set uses a stacked B+ from the audio out to supply the screen voltage of the video out (as well as other tubes). It also supplies the hot side of the brightness control. You should be able to locate that 3.3 meg now, it has the 135 (or what ever is the output from the stacked B+) on one side the other goes to the brightness control.
Last edited by DaveWM; 02-05-2015 at 06:27 PM.
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