1969 Zenith 25ZT120 - AM Drop-Out, Sticking Power Button Issues

[videoroot]

Originally Posted by damen

Your AM problem is most likely shorting plates on the tuning capacitor. Sometimes with a good eye and a bright light you can find where they are touching together.

I'll give this another look later today or tomorrow and let you know how I make out. Thanks!

I somehow neglected to mention this in my original post, but this issue does not occur when the input selection is set for FM (or AFC), and I believe the same tuning capacitor is used for both FM and AM bands, hence my worry that it might be something else entirely.