A:
Please check the power cord from the TV is being connected directly to the wall outlet or a power strip that is always ON. Making sure the TV is not receiving power from another device, such as a cable set top box, a satellite box, or an A/V Receiver, that removes AC power from your TV when that device is turned off. Do a factory reset as instructed on the link below:
https://us.en.kb.sony.com/app/answers/detail/a_id/42994/p/61659,62766,92867,91640/c/65,66/related/1