Need pointers on 65 zenith color roundie 25mc33

[DaveWM]

are you sure its snow and audio or blank raster and audio?

Unlikely to need a recap of any kind, if the HV is working the B+ is prob ok at least enough to trouble shoot the video.

could be tuner, try a new RF tube, make sure balun is not blown, get a video if possible makes it much easier to understand the issue

[zeno]

Time for screen shot. If you have good audio but "true"
snow it dont make sense. What it might be is the fine tuning
is off & the fine tune gears are no longer working. Set has a
super gold video guard tuner ( SGVG ) best anyone built.
You can pull it, take the cover off & be sure the screws on
the channel strips are being moved in & out. There is a gear
on the FT shaft that moves & engages the screws. This one
probably has the diaper pin style, a common fail.
Good luck

73 Zeno