Toshiba India — Toshiba led tv model d36x13h00170c1

Address:	Mumbai City, Maharashtra, 400001
Website:	CONSUMER CARE

I have 1 toshiba led tv model d36x13h00170c1, 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 o[censored]se. 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? Any insight would be appreciated.
Thanks