Facing TV Problems? Ask a TV Technician.
No error code with the TV turning off by itself?
If so, turn the TV on, get the Panasonic remote control, activate the volume bar or the TV menu. Does anything appear on the TV screen?
Lastly turn the tv off. darken the room and stare at the TV screen when you turn it back on. Do you see the screen at least light up to a gray light level, even for a second or two?
You might want to remove the TV's power cord for 20 minutes, plug it back in and at least see if the power button will make the power light blink during start up. It should, and if it doesn't...contact me tomorrow morning.
Are you still there?