T.V keeps shutting itself off

Check your sleep mode timer on tv, might be on accidently

Check if the sleep timer is on. Go to settings and check under timer and check the sleep timer if it's on/off.

When you press the Power/Sleep button the radio turns on and displays a number 90, or some other numbers. This is the play time that the radio will stay on then turns itself off. It could be that yours is configured with a sleep timer set to 01 minute, 10 or 15. You need to set the timer for a longer period. Thus we turn it on by pressing the Power/Sleep button, read the timer length then press again. Keep making short presses: The timer will cycle through all preset sleep timer durations. Select the length you want.

When you press the Power/Sleep button the radio turns on and displays a number 90, or some other numbers. This is the play time that the radio will stay on then turns itself off. It could be that yours is configured with a sleep timer set to 01 minute, 10 or 15. You need to set the timer for a longer period. Thus we turn it on by pressing the Power/Sleep button, read the timer length then press again. Keep making short presses: The timer will cycle through all preset sleep timer durations. Select the length you want.

When you press the Power/Sleep button the radio turns on and displays a number 90, or some other numbers. This is the play time that the radio will stay on then turns itself off. It could be that yours is configured with a sleep timer set to 01 minute, 10 or 15. You need to set the timer for a longer period. Thus we turn it on by pressing the Power/Sleep button, read the timer length then press again. Keep making short presses: The timer will cycle through all preset sleep timer durations. Select the length you want.

it is most likely overheating. you might want to setup your ventilation system in the house in a way your TV will be well ventilated...

have you checked your auto shutdown timer?

Check the power settings - most laptops are set to sleep even if plugged in to AC power - go to Control Panel -> Power Options and check for sleep/shutdown settings under "Plugged In".

You have probably set the sleep timer. Here's how to switch it off: To cancel the sleep timer, press the SLEEP button until <OFF> appears on the display.

check your sleep timer settings. they stay on no matter how much you turn your unit on and off.