“I bought TCL - 65" Class S4 S-Class 4K UHD HDR LED Smart TV with Google TV 6 weeks ago and suddenly while watching hdmi option, the sound will disappear after about 30 minutes and then picture a few seconds later. Only way seems to get back is unplug”
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Have you tried swapping out the HDMI cable? I had similar issues with picture going in and out, but after I got a new cable, no problems. You can also try connecting to a different HDMI port on the TV. I've also had similar issues with hubs/docks in the past, so might want to check that out as well.
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