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On my LG LCD TV # 42LG60 2or3 on/off tries to get it to startup and when it does, it has jumpy horizontal lines. Like static lines. Once in a while it it might startup with a blank green screen, Everything else seems to work fine. I pulled the back off and cleaned all the cable connections, but nothing changed. Have you got any suggestions on witch board might cause this problem ?
@davidj_daniel horizontal lines like you describe are most commonly caused by a bad LCD driver board. That board is part of your screen and cannot be replaced. Post some good pictures of what your screen shows as well as what your boards look like etc. that way we can see what you see and we may identify some other issues. Adding images to an existing question
