I don't want to be the captain of the obvious, but it took me a few days to figure out how to do it. The TV set made friends with the home theater as follows: I connected an optical cable, I took an inexpensive belkin (it makes no sense to take more than a thousand / two), I connected HDMI, it doesn’t matter which one at all, I pressed the home button, connected the microphone and started auto-tuning. Without this, the cinema played back in TV mode via optics, but it was not possible to adjust the sound, turn it on and off with the TV. And it turned out because there are no wires in optics, it is essentially a hollow tube that transmits light, and HDMI acts here only as a wire for transmitting an electrical signal.
DC/DC 12V To 24V Boost Converter 40A 960W - Waterproof Voltage Regulator Module For Car Power Supply (10V-16V Input)
15 Review
TV Tuner LUMAX DV-2120HD
15 Review
Kohree 36V To 12V DC/DC Converter Regulator - 10A 120W Golf Cart Voltage Reducer
17 Review
HOMELYLIFE 600W High Power Voltage Reducer DC 48V 60V 72V Step Down To DC 12V 50A Buck Converter Waterproof Module Car Truck Power Regulator Transformer
12 Review