Hello, Mike -
If you have not already done so, check the label on the back of your Vizio TV, where you found the serial number. The month and year of manufacture may also be printed on the label.
We have a Vizio TV. The month and year of manufacture is printed on the label on the back of our TV.
If the month and date of manufacture is not printed on the label on the back of the TV, then I suggest you contact Vizio Support and ask your question:
https://support.vizio.com/s/contact-us?language=en_US
Best wishes.
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