Question about Televison & Video
From the symptoms mentioned it seems that you have a problem with the LCD back lighting circuit, also called inverter circuit.
One way to confirm is to turn on the TV with the room lights out ( dark room ). From the back ventilation grill on the top of the TV you should be able to see some white light ( like a fluorescent lamp ) coming out from behind the LCD panel. If not its the inverter circuit problem. The inverter circuit provides high voltage to the cold cathode lamp array behind the LCD panel. To get to it one will have to strip the TV. You have to remove the back cover, disconnect the circuit boards and remove them and then remove the metal shield plates before you can get to the inverter board.Then you will have to get the replacement board from the authorized service center. Get professional help if you are not up to it or revert back for further instructions.
Posted on May 29, 2011
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Posted on Jan 02, 2017
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