One of the responses to my complaint said the power board needs replacing. I have not yet looked how much the part would cost, but will before Monday. If the price is reasonable, I’ll replace it myself, unless the manyfacturer is willing to do it for free. Update (01/05/2019): I also got a procedure from Vizio via Text message: “Let's try a power cycle. -Power off and unplug the TV -Press and hold the power button for 20 seconds -Plug the power in -Power on the TV”
Sometimes the Bluetooth mouse and sometimes even the USB wired mouse stops moving properly. That is usually caused when the laser lens gets dirty. Get a Q-tip or a small cloth like from a cotton tee shirt. Moisten it with rubbing alcohol, (not the drinking kind). Clean the lens thoroughly, then try the mouse again. If it still does not move, and the batteries are good, then its time for a new mouse.
Turn the power off by holding down the power button on top of the iPhone AND the button on the face at the same time. It takes a few seconds. After the power is off, click the power button once. The iPhone will restart, showing the Apple logo, and completely reload the system file. U That procedure usually fixes hangs and button problems.
If the alcohol treatment on a paper towel strategy results in it just messing up again, use Goo-Gone instead. The Goo-Gone melts the flakes of hard hand grease and will free up an otherwise jammed up mouse-ball. It is ten times as effective a rubbing alcohol. The MacGuru