LG 42LF66 black screen only sound

[lopac42]

Hello,

I have since December a Lg 42LF66 television. The problem is that from the beginning some times ones a week when i switch the tv on there is no picture only sound .The screen keeps complety black like it is off .When i switch it off and then on the problem is gone I found out that when i have this problem i push the TXT button  it switches on the pannel and shows teletext  when i exit teletext it switches on the backlights and i have picture ??>


someone knows what this fault is .

Lorenzo,

[lopac42]

No one ?

[tv tony]

the lf66, yes, right look at the top of the main  (signal) pcb, are fl901 through to fl907 fitted, these are under the larger white plug from the psu