Yah, I may find all kinds of ugly stuff when I hook up a scope. All I've done so far is recap it, so I am just beginning the project.
Speaking of noise and retrace, if you turn the brightness & contrast far enough to show the classic slanted retrace lines in the top, you also see this squiggle in the center, which seems to trail down from the tip of the lowest retrace line.
Kind of arty looking, but I guess I should get rid of it eventually.
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html