Facing TV Problems? Ask a TV Technician.
The firmware on the main board has likely gotten corrupted after the update, and the TV is no longer able to boot up correctly, and is stuck in a boot loop.
Since the TV is unable to boot up, the only way to fix this is to fix a replacement main board with working firmware installed on it.
yes, the main board is the digital one that the HDMI connections go into.
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