What part is bad on my LED TV that O don't have a picture

[Dean_27]

I Have an LG LED tv model 42LB5600 lost my picture, what part do I need to buy to fix?

 

[Dean_27]

What do you want? I have put in 3 times I have sound and no picture, what else can I give you?

 

[USAFRet]

Patience, please.
You created this thread 14 minutes ago.

This is not the LG help line.

What was the last thing you did before this happened?
How old is this TV? Is it still under warranty?