Hello Look very close to the secreen, while a programme has been selected, and try to see whether there is any trace of picture, moving on the screen or not. If you can see any white shade traces of picure, be sure that the backlight is not woking. the main reason for this fault with be of backlight inverter board, which generates high voltage to CCFL tubes. If so, you have to replace the baacklight inverter board. If no traces of picture are there on screen; the T'Con [timing control] board is faulty, and should be replaced with same part number. OK.
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Hello
Look very close to the secreen, while a programme has been selected, and try to see whether there is any trace of picture, moving on the screen or not. If you can see any white shade traces of picure, be sure that the backlight is not woking. the main reason for this fault with be of backlight inverter board, which generates high voltage to CCFL tubes. If so, you have to replace the baacklight inverter board. If no traces of picture are there on screen; the T'Con [timing control] board is faulty, and should be replaced with same part number. OK.