Per the issue, please try to correct the power state, and then see if it could normal.
1) Open Activity first, if sony is not turned on normally, please open it manually.
2) Press off to close all activities, if sony TV is not closed, please close it manually.
3) Open Activity again after 10s, and see if sony TV is turned on normally.
Sometimes the Activity cannot be used because the switch state recorded by the device is disordered. In this case, it is generally only necessary to make the actual state of the TV consistent with that recorded by the Activity.
If above still no help, Please provide the specific model number of your sony TV to us for checking, tks