I'm really hoping someone here can help.  I have a KDL-43W805C that will not switch on.  If I hold the power button down the front LED wil pulse gradualy for 2 secs then the screen flickers briefly.  I've tried disconnecting from the power and leaving for 2 hours before plugging back in.

Has anyone else experienced this issue, or does anyone know of a way to do a hard reset via a button combo press?  Many thanks.