MENU > Settings > Installation > Antenna Power
If ‘Installation’ is greyed out then ensure that you are not recording or playing back a programme.
If the HDR-FOX-T2 is freezing before you can get to the correct menu then with the HDR-FOX-T2 powered down remove the aerial lead from the aerial in socket, and then have another go with the aerial still unconnected.
Neil S, August 2013