|Snowy screen usually means no aerial connected, no actual rf signal coming in...|
But... Internal faults can produce similar results.
Also are you connecting a satellite or similar box - usually via hdmi or scart (the latter if in UK/Europe).
What make/model is the tv?
Have you also tried the remote with a new set of batteries.
The lack of menu display does tend to suggest an internal fault with the set though...?