Have a 65UH5500 4K UHD Smart LED TV - 65" that went black while watching. Light will flash about 3 to 4 times and turns off. L

Apr 12, 2018
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PROBLEMS WITH MY TV Have a 65UH5500
4K UHD Smart LED TV - 65" that went black while watching. Light will flash about 3 to 4 times and turns off. LG TV sigh will briefly flash when you unplug and turn back on.Replaced Main board and power board . STILL THE SAME . Any ideas ? TV is 2 years and 3 months old . NO SOUND