Facing TV Problems? Ask a TV Technician.
Hello, Sorry you're having problems. Offhand the TV not turning "ON" (not powering up) has nothing to do with the Cable Box, or rebooting it.
I need to ask for more info:
1) If you press the power button on the lower left rear corner of the TV (or using the ORIGINAL Vizio remote) will the TV turn on with the "V" on the screen?
2) Roughly, how old is the set?
Please don't post duplicate questions simply reply back here to proceed.
Do you need assistance with the question you posted please? If so I am here now. However if you're unable to engage, simply postback when you can and I will respond when I am available later.