I have 2 Toshiba LED TV's, both are model #: 46L5200U1, that are having identical issues. The screen will begin to flicker, and then cut out entirely, but the sound remains on. Sometimes after an hour or two, but usually after only a few minutes of use. It happens on all inputs, with or without a source plugged in. Turning off the set, then back on will restore the picture, but only for a few minutes. They started doing this within days of each other. I have been unable to find any references to this online, despite having identical units exhibiting identical behaviors. The sets had been installed in a restaurant, each had a cable box run to it via hdmi cable. Has anyone seen this issue before?
I didn't find the right solution from the Internet.
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