While the tv power cord is unplugged, you must press the power button on your Sony TV for about 30 seconds. And then, plug the tv back to the power outlet. Check if the red light blinks still occur.

If it does not reboot, press the POWER button on the remote control to turn on the TV. Try to check if the issue persists on your Sony TV. Solution 2: Check the power supply ...

Hold the reset button on the TV while you press the power button again. The plasma TV will kick on a green light and turn on completely. This forces it out of standby mode.