Unplug all connections to the set and then remove the power connection. Wait 10+ minutes then apply power and try again.
That's it for what we can do without being a TV tech. TV techs know what to do next so good luck.
It's a Samsung flat screen with the model number Model BN64-01581A-00.
I have no idea what happened. The TV was fine yesterday, but when we got up in the morning, it wouldn't turn on.
I changed the batteries in the remote, tried the power symbol on the TV (it's not a button, but a sensor), and I'm sure nothing's been unplugged.
Any ideas what's up?