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The right side sort of outlined in white are all power related. The main chip that everything passes through is in the middle left under the black heat radiator. The small black chips are for encoding/decoding, storage, etc. the white FPC/FFC connectors up at the top left are the connections to the display panel and backlight.

There is no HDMI connection to the display without it being translated by the signal processing chips. HDMI comes in, gets decoded, that passes through the processor to handle signal translating to display instructions and signal processing for display properties, which is then output to the display. The operating system, which is always running in the background, is run on the same processing hardware that handles the display instructions.

There is no way to divorce the “smart” TV functions from the function that handles converting the HDMI to display instructions without hardware to replace all the functions of that board minus the smart functions or by replacing the firmware with dumb software that doesn’t have the smart functions.

There is no place to add an HDMI port that bypasses the smart processor because the smart processor is what makes HDMI to display communication possible.