The Family DuMont

[earlyfilm]

Originally Posted by CaryLee

It appears I have a balky FOCUS control. When I turn that control, there is a "dead" spot in the middle where the sound drops out, but it picks up at either end, far left or far right. What the FOCUS has to do with that I have no idea at present.

Check your schematic. Your B+ is fed through your wiper on the focus pot. I assume that is a wire wound. You might see if it is open in the center as that could be causing part of your problems.

Originally Posted by CaryLee

. . . . . (I must have SOMETHING around here I can plug into that jack! Man, has technology changed! Curse you Optical Audio and HDMI!).

I would be cautious about plugging in anything that uses transistors or chips into the record player jack, because this set has a semi-hot chassis though a 100 K resistor. Not enough to current there to hurt a person, but it might be terminal to a transistor circuit that was not buffered against a little AC.

James