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The C213 that I removed was marked as 270 pf, a "postage stamp" type mica. I just checked the heater voltage; it's 6.32VAC at a line input of 117VAC. With everything disconnected from pin 3 of the oscillator tube, resistance from that pin to ground is infinite.
Since the schematics call for 270 pf, I removed the 82 pf cap (which didn't improve anything) and reinstalled a 270 pf for C213. While I was there, I also replaced R248, the 47K resistor. With everything reconnected, the TV behaves the same.
Phil Nelson
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