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If the TV was not plugged into power through a surge protector or other power filtering device, it is to be feared that it was damaged severely.
A surge protector for every electronic device of any value, is an investment that always pays off in the long run.
That there is no blink code as well as no picture, hints to my common sense, that both the power supply (higher voltage needed for picture and/or backlight) and the logic board (needed for there to be a blink code, usually) have been damaged. But basically, with surge or power variation damage, one needs to snoop through a device's workings in detail, in order to determine where the damage occurred.
I'd advise - if you wish to try to repair this yourself, and have electronic equipment and electronics repair skills - getting a service manual for this model line. It would help a lot.
Otherwise, it's a clear choice between repair - quite possibly quite expensive - and replacement.
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