Static heard in the speaker when fooling with the volume is a dirty volume potentiometer. You electrical cleaner to fix that, spray it in the pot, cycle the knob back and forth. If that doesn't sort it out, time for a new potentiometer.

As for no audio, well to ask the obvious, do you have an AM station around you?

I would use a signal generator, am modulated at 11khz, as the source and trouble shoot it that way But I have those items and an O'scope to signal trace. Might be something as simple as just needing an alignment. Hard to say without those tools adn a schematic.