Perhaps, although it's used to couple RF so I wouldn't think it's value would be that critical.
I dug out my B&K 1077B and fed a signal right at the tuner output and got a stable image
Didn't last long though because a new issue has cropped up. The horizontal oscillator stops running after a few seconds and the screen resistors starts to cook. The original resistor was charred so I suspect I still had a bad component lurking somewhere.
