Sony TV Black screen

why does my Sony 46" LCD screen go black after about 30 min running and than after 6hr I can turn it on again and get a picture only to have it shut down again after another 30 min?

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Lonn Freeland possibly bad caps or the power board. Have you opened it up yet? Unplugged of course and don't touch anything on the inside for a while:-) You also want to make sure that it has good airflow and not to much dust on the inside. You say it's a 46" but picked the 40" device. What model is your TV? Let us know what you find

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