Why does my television has power but won't turn on?
Why does my RCA television has power , red light on , but won't turn on ?
"Samora Choné remove the back cover from your TV. Get a multimeter and measure the power board to mainboard connector. You should have 5V STBY on your connector. If you do ( I am certain you do since your power light turns on) then the issue is most likely related to your main board. you do want to go ahead and post some good pictures of your boards with your QUESTION. That way we can see what you see and try to help you further.
Adding images to an existing question"