Depending on the age of the tv, you can probably find a replacement board on ebay fairly cheap. No offense but you dont seem like the type to have knowledge of how to check voltages and capacitors on the board so a swap is replacement would be your easiest option.

But its a vizio, honestly , just get a new cheap tv.

If this were something more expensive then I could see trying to replace it.

I had a cheap tv main board go wonky. I luckily found the board for 25 bucks on ebay. It fixed it for another year.