Have a TV purchased in 2006 & need help turning it on, have Comcast cable but need assist as am in my second home and can't remember how to use remote control?

The Comcast cable box remote might need to be reprogrammed to your TV.

For programming help, go here:
Comcast Remote Codes - Program Your Comcast Remote Control

Otherwise, if you are using your Panasonic remote, press the red power button at the top of the remote to turn the TV on. Otherwise you can push the power button either on the front of the TV slightly off-center, or on the side of the TV.

If the TV is on, but you have a no signal issue then you need to make certain you have the TV on the correct input. You do this by pressing the input button either on the TV remote or on the side of the TV. Keep pressing the button to cycle through the inputs, stopping on the one that matches which connection you have connected your Comcast cable box to.