Maybe the problem of your television is the screen back lights.The screen have no back lights.If theres is no back lights the problem is in the back lights driver or power supply.Usualy the common problem is loose connection at the socket of the cathode lights.The cathode lights have high voltage input come from the driver that my cause of over heat of connector.So try to resolder the connector or socket using soldering iron.It is located at the board of the television.Remove the back cover to see the board.
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