LG42LE4500 picture goes blank after few second, can only hear sound

[Pbahuguna]

Hi Guys, I am looking for some real help here. I have LG 42LE4500, from past few days when I start tv it turn on fine but after few minute (10-15) picture goes blank and I can hear only sound.
I did flash test and I can see dim picture so seem backlight is ok but very dim.
I checked few forums and seems like its bad inverter but I don't know which one is inverter. I am attaching pics here will appreciate if any one can suggest what component I need to replace
Kind regards
Praveen

[Pbahuguna]

Re: LG42LE4500 picture goes blank after few second, can only hear sound

Hello guys, plese give some love to my problem as well

[stj]

Re: LG42LE4500 picture goes blank after few second, can only hear sound

you dont have an invertor or tubes - it's got LED backlights.
i suspect they are powered from the 2 cables going through the top-center of the display-shield from the top-right of the power board.

[Pbahuguna]

Re: LG42LE4500 picture goes blank after few second, can only hear sound

Do you think it could be problem with main board and it's worth replacing it?

[stj]

Re: LG42LE4500 picture goes blank after few second, can only hear sound

probably not the mainboard.

some good power boad foto's would be a good next-step

[audiofreak19]

Re: LG42LE4500 picture goes blank after few second, can only hear sound

Yea ur inverter usually is built Into your power board.

[audiofreak19]

Re: LG42LE4500 picture goes blank after few second, can only hear sound

I had the same problem on a lcd of mine the tv would turn on just fine and show a picture but would turn off after a few minutes. I determined it was a ccfl bulb. I wonder if in this case if it could be a led gone bad. I highly doubt it but its a wonder.

[Pbahuguna]

Re: LG42LE4500 picture goes blank after few second, can only hear sound

Let me know if this picture of power output pin to led help