So, my TV won't turn on. It is a Hitachi 42". I have tired unplugging and replugging it. It does work sometimes but it eventually goes back to this state. When I plug it it the screen blinks with just gray and goes back to dead. When it is normal there is a red light indicator that is on when it is off and it is not on. I've taken it apart and have not found anything wrong with the PSU. What happened?