Re: Toshiba 46L5200U1 Power issues.

I have a friend that just gave me the same model of Toshiba and the issue it's having is that once the TV is turned on it turns it's self right back off. Doesn't seem to have a issue with the display or the LED. That all looks good when the TV is on. It's just not staying on. Could it be that that power supply board be defective? I ordered a new one just to try it out. But what do you think? Thanks