1, the remote controller can't be used normally, the battery is not fully charged, and the buttons of the remote controller are damaged, which leads to the failure to turn off the TV.
2. The TV switch button is damaged, which leads to the failure of normal use of the TV switch and the inability to turn off the TV after it is turned on.
3. The motherboard in the TV set and the cable connecting the motherboard are damaged, which makes the TV set unable to be turned off after being turned on.
4, TV motherboard aging, aging lines, slow down the response speed of the TV, resulting in the TV can not be turned off after starting.
5. The TV screen is damaged, which makes it impossible for the TV to transmit the turn-off signal to the screen, which makes it impossible to turn off the TV after it is turned on.