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Hi , I`m Jack , I will be helping you todayCan you please send me a reply when you are ready to proceed ?
By the way , I may not need the model number if there is a problem to retrieve it from the back cover but the brand name could be useful
Your other post is a duplicate , please do not respond to it and respond here
Here is something for you to try ;Unplug the TV's power cord and hold the power button directly on the tv ,keep holding it for 20 secs or so then let the tv sit unplugged for a couple of minutes before you try it again.
On newer vizio the power button is at the back lower left side