hi vlad . i have got 2 lg tvs for repair .th first one just has the green light flashing and the second has back light on and grey screen and menu shows on screenwhen pushed . one is a 32inch and the other is a 37 inch . swopped over the main av board with the tuner on it and did vica versa and the faults have switched . i can only assume that both the av boards are faulty even though the faults are not the same