Have a sharp TV model CX80J5 (Australian Model) possibly 6 years old.
Set strats up ok with out Aerial connection and displays blank screen
or "snow"
as soon as aerial connection is made and tuned station displayed set
works fine for 20 - 30 seconds then shuts down. No aerial connection
and set remains on! as soon as it has Picture to display it shuts down
soon after ?

Where to start? any known issues with this area?

thanks in advance.