I have a 55 inch lg flat screen I turn it on and it just flashes and turns off but the red light stays on how can I fix this?

[kennyhollins29]

I have a 55 inch lg flat screen I turn it on and it just flashes and turns off but the red light stays on how can I fix this?

 

[Calvin7]

Check model number and do a search for parts that are available for it. Maybe you can find a mainboard for sale.

 

[clarkjd]

Is this new behavior from an old tv, or is this a new TV that is still under warranty?