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