Https://www.youtube.com/watch?v=jW6g59mzdaM
Below is how to do a factory reset.
https://www.techsolutions.support.com/how-to/how-to-reset-a-westinghouse-smart-tv-11060
If an internal component is at fault, here is something a DIYer can eye: https://www.youtube.com/watch?v=GmjULp9eBtU
It is always helpful to include the model of a device in a posting in addition to the brand.
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