A raster and horizontal deflection are encouraging signs (arcs and popping sounds, not so much).
In addition to electrolytics, I think I see a "bumblebee" plastic-coated paper cap hanging off that convergence board. Those are as bad as wax paper caps -- highly suspect.
If I spied any other bumblebees, particularly in vertical & horizontal sections, they would be high on my list for replacement. Ditto for any plastic-coated caps in other clothing, like Big Chiefs.
Have fun,
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html