[Jeff Lepore]

well, I started at the top and was getting good reading or close. Then I got to your 5th point checking grid cap o 6A7 and 78. Got no resistance. and the rest of it. Nothing. 6 was OK. but 7 point was a no show also. There is only one wire coming out of the back, which I assume is the antenna. Shouldn’t there be a ground wire also. if so where would it connect in chassis. Schematic doesn’t show.
    I rechecked all of your points a 2nd time and everything checked out the same.